8 months ago

NAOBC

A Premier Challenge


March 13-21 2021

The Spring NAOBC features a Premier Knockout Team event (March 13-14, 20-21), an IMP Pairs Event (March 18-19), and a Premier Pair event (March 20-21). All three events have three flights: Open, 0-5000, and 0-1500.

SCHEDULES ENTRY FEES MASTERPOINT AWARDS TEAM EVENTS  PAIR EVENTS
REGISTRATION  COCs FAQ



Before the Tournament

Monday, Feb. 22 NAOBC Open Knockout Team Entries open on BridgeWinners for all Flights
Monday, Mar. 8 – 11 PM (EST) Entries close for NAOBC Open Knockout Teams
Wednesday, Mar. 10 – 11 PM (EST) Entries close for NAOBC 0-1500 & 0-5000 Knockout Teams
Thursday, Mar. 11 – Noon (EST) Deadline for convention cards for NAOBC Open Knockout Teams
Thursday, Mar. 18 – 11:00 AM (EST) Entries open for NAOBC IMP Pairs (All Flights)
Saturday, Mar. 20 11:00 AM (EST) Entries open for NAOBC Premier Pairs (All Flights)

Knockout Team Event Schedule

REGISTER YOUR TEAM
NAOBC OPEN KNOCKOUT TEAM SCHEDULE (SATURDAY, MARCH 13-SUNDAY, MARCH 21)
Start times: 1:00 & 6:00 PM EST
The 2nd segment of each KO match will begin two hours after the posted start time.

Knockout matches Saturday, Mar. 13
Knockout matches Sunday, Mar. 14
Knockout matches Saturday, Mar. 20
Finals Sunday, Mar. 21

Pre-registration required. Full-day matches for Finals and Semi-finals as attendance permits. A very small number of half-day play-in matches, to be played on Thursday, March 11, or Friday, March 12, may be necessary. 

0-5000 Knockout Team Event

REGISTER YOUR TEAM
0-5000 KNOCKOUT TEAM SCHEDULE (SATURDAY, MARCH 13-SUNDAY, MARCH 21)
Start times: March 13 & 14 1:15 & 6:15 PM EST     March 20 & 21 1:00 & 6:00 PM EST
The 2nd segment of each KO match will begin two hours after the posted start time

Group play Saturday, Mar. 13
Knockout matches Sunday, Mar. 14
Knockout matches Saturday, Mar. 20
Finals Sunday, Mar. 21

Pre-registration required. Full-day matches for Finals and Semi-finals as attendance permits. Teams are guaranteed a full day of play before knockout matches commence. .

0-1500 Knockout Team Event

REGISTER YOUR TEAM
0-1500 KNOCKOUT SCHEDULE (SATURDAY, MARCH 13-SUNDAY, MARCH 21)
Start times: March 13 & 14 1:30 & 6:30 PM EST     March 20 & 21 1:00 & 6:00 PM EST
The 2nd segment of each KO match will begin two hours after the posted start time.

Group play Saturday, Mar. 13
Knockout matches Sunday, Mar. 14
Knockout matches Saturday, Mar. 20
Finals Sunday, Mar. 21

Pre-registration required. Full-day matches for Finals and Semi-finals as attendance permits. Teams are guaranteed a full day of play before knockout matches commence. 

Premier Pair Event Schedule

NAOBC IMP PAIRS EVENT SCHEDULE (THURSDAY, MARCH 18 -FRIDAY, MARCH 19)
Qualifying Sessions Thursday Mar. 18, 1:00 and 6:00 PM EST
Final Sessions Friday  Mar. 19, 1:00 and 6:00 PM EST
NAOBC PREMIER PAIR EVENT SCHEDULE (SATURDAY, MAR. 20 -SUNDAY, MAR. 21)
Qualifying Sessions Saturday Mar. 20, 1:00 and 6:00 PM EST
Final Sessions Sunday Mar. 21, 1:00 and 6:00 PM EST

Entry Fees

NAOBC Open Knockout: $80 / team per session. Junior discounts apply*

NAOBC 0-5000 Knockout and NAOBC 0-1500 Knockout: $68/ team per session. Junior Discounts apply.**

NAOBC Open Pairs: $20 per player per session. Junior discounts apply.*

NAOBC 0-5000 and 0-1500 Pairs: $17 per player per session. Junior discounts apply.**

*Junior entry fee for open events $10 per session

**Junior entry fee for limited events is $7 per session

Masterpoint Awards

Open Knockout: 1st place 200MP, 100% Gold.
0-5000 Knockout: 1st place 64MP, 100% Gold.
0-1500 Knockout: 1st place 36MP, 100% Gold.
Open Pairs: 80% of NABC rating per formula. If there are 50 tables, 1st place would be 61.70 MP. 100% Gold
0-5000 Pairs: 80% of NABC rating per formula. If there are 50 tables, 1st place would be 49.36 MP. 100% Gold
0-1500 Pairs: 80% of NABC rating per formula. If there are 50 tables, 1st place would be 37.02 MP. 100% Gold

In all events, overall awards are Gold points, while match awards and session awards are Red points.

NAOBC Open Knockout Teams

The NAOBC Knockouts is a four-day event and is open to all ACBL members in good standing. The matches will be held according to the schedule. Matches in the will be 28 boards per session. All matches will be played on Bridge Base Online..

Convention cards: Each partnership on every team in the Open flight of the Premier KO must submit a complete convention card to the tournament by Thursday, March 11, at noon ET. Instructions for submitting convention cards will be posted soon. Failure to submit Convention Cards in a timely manner may result in loss of seating rights. Convention cards will be made publicly available for inspection.


NAOBC 0-1500 & 0-5000 Knockout Teams

The NAOBC 0-1500 & 0-5000 Knockouts is a four-day event and is open to all ACBL members who meet the masterpoint requirements as of the ACBL computer run on March 6, 2021. Knockout matches in the 0-5000 flight will be 26 boards per session. Matches in the 0-1500 flight will be 24 boards per session.


NAOBC Flighted IMP Pairs

The NAOBC Flighted IMP Pairs (Open, 5000, 1500) is open to all ACBL members in good standing who meet the masterpoint requirements as of the ACBL computer run on March 6, 2021. This is a four-session pair event on March 18 and 19, 2021, with 24 boards played each session. The top 50% of the Thursday field qualifies to play in the Friday final.


NAOBC Premier Flighted Pairs

The NAOBC Premier Flighted Pairs (Open, 5000, 1500) is open to all ACBL members in good standing who meet the masterpoint requirements as of the ACBL computer run on March 6, 2021. This is a four-session pair event on March 20 and 21, 2021, with 24 boards played each session. The top 50% of the Saturday field qualifies to play in the Sunday final.


Registration

Pre-registration for the NAOBC Premier Knockouts is mandatory and is limited to the first 128 teams in each knockout (Open, 0-5000, 0-1500). Registration opens on Monday, February 22. Register at BridgeWinners.com. For the Open Flight, entry sales close at 11:00 pm Eastern time, Monday, March 8, 2021. For the other flights, entry sales close at 11:00 pm Eastern time, Wednesday, March 10, 2020.

Entries for the NAOBC Flighted IMP Pairs and the NAOBC Premier Flighted Pairs will be sold on Bridge Base Online. There is no pre-registration. Registration opens March 18 and March 20, respectively, at 11:00am Eastern time.

We will endeavor to start every session of every event on time. All players in every pair/team who are scheduled to play in a given session or segment MUST be logged into BBO and ready to play at the scheduled start time of each session. Failure to do so may result in disqualification from the event. Be warned that if you are inactive in BBO for an extended period of time, BBO will automatically consider you to be off-line. It is recommended that you do something active in BBO a few minutes before game time.

Register Your Team

COCs

Conditions of Contest, NAOBC Open Knockouts

NAOBC Open Knockout

The General Conditions of Contest (CoC) for Knockout (KO) Teams will apply to this event, subject to the following special CoC. The CoC for the NAOBC KO Teams consist of this Special CoC, Appendices B, E, and O that are most recently revised prior to the date of the event. These CoC may not be changed during the course of this event. The Director in Charge (DIC) will resolve any issue not specifically covered by these CoC.

CONDITIONS OF ENTRY

  1. These events are open to teams of four, five, or six players, each of whom is a paid-up ACBL Member. Each team must select a captain, playing or non-playing, who will be responsible for all official representations to the TD or committee. The completed entry must include the names, player numbers and BBO IDs of all participants, and a notation as to who is captain.
  2. Entries for this event will be sold on BridgeWinners.com and will be limited to the first 128 teams that enter. All players must be ACBL Members in good standing. The entry deadline is 11:00 PM Eastern time, Monday, March 8, 2021. After this deadline and before noon Eastern, Wednesday, March 10, 2021, an entry may be accepted if, in ACBL Management’s opinion, it would improve the format of the event.
  3. All pairs must have a completed ACBL Convention Card submitted in pdf or similar format by noon Eastern time, Thursday, March 11, 2021. These Convention Cards, as well as any supplemental information such as WBF convention cards, USBF system summary forms, or similar document provided, will be made publicly available on the ACBL website. Any team that has not submitted its Convention Cards before the deadline, will lose one segment of seating rights in each of their first two matches. A team that has not submitted its Convention Cards by 9:00AM ET Friday, March 12, 2021, may be excluded from play in the event. Players are also expected to post convention cards within the Bridge Base Online environment.
  4. The DIC will resolve any request for changes to the submitted entry.

PARTICIPATION REQUIREMENTS

  1. Every team member must play at least half the boards of each match, exclusive of playoffs, in order to continue on that team for the remainder of the event. The team captain may submit an application for exemption from the requirements of this paragraph to the DIC but must do so (other than for emergencies) prior to entering the team.
  2. A team member granted an exemption must still play at least 40% of the boards, excluding playoff boards, for as long as the team survives to qualify for overall masterpoint awards and other privileges. No contestant may play any match after it has become mathematically impossible to play at least 40% of the boards, excluding playoff boards, played by the team.
  3. An ineligible player is disqualified. If the disqualification occurs prior to the conclusion of the registration period, the team is not disqualified as long as it contains four or more eligible players. If a player is disqualified after the beginning of play, the team is disqualified. Any team reduced to fewer than three original members due to disqualification of ineligible members is disqualified. When a player’s team is disqualified after the correction period for the event expires, the disqualified team’s position remains vacant. If the deficiency is discovered prior to a match starting, the result of the preceding match is changed; or, if discovered during a match, that match may be forfeit. The result of no other match is altered.

THE BRACKET

  1. Bracket seeding will be based on the average seeding points of all members of the team. A maximum of 50 seeding points will be credited to any one player. When necessary to break a tie, the players on the tied teams will be credited with their full seeding point totals. Continuing ties will be broken by lot. Seeding points are awarded per Appendix B.
  2. The teams will be ordered by their average seeding points. In cases where a tie broken by lot involves teams in two groups, the loser(s) of the tie-break will be given the high seed(s) in the next group.
    • The champion of the 2020 Fall NAOBC Open KO Teams will be seeded number one provided that at least four original members are playing together. Otherwise, the team with the highest average seeding points will be seeded number one.
    • The next ordered team will be seeded number two.
    • The next two teams will be assigned seed numbers three and four by lot. Then, the next four teams will be assigned seed numbers five through eight by lot. Similarly, seed numbers will be assigned by lot for positions 9-12, 13-16, 17-20, 21-24, 25-28, 29-32, 33-40, 41-48, 49-56, 57-64, 65-80, 81-96 and so on in groups of 16. See Appendix B.
  3. Any corrections to the bracket must be requested at least two hours before the announced starting time of the event. After that time the bracket will stand as posted.

CONVENTIONS

The ACBL Open+ convention chart governs whether bidding and carding methods are permitted, disallowed, or restricted in this event. Pairs playing methods which require a written defense to be provided must furnish a description of their methods to the DIC of the event the day prior to putting these methods in play. The DIC must notify the opponents (by indication on the bracket sheet) that these write-ups are available.

SCORING AND PLAY

  1. This event will be hosted by and played on Bridge Base Online.
  2. This event is a single-elimination KO, with any fraction of an IMP constituting a win.
    • For each round, match pairings will be such that the sum of the seeds is the number of teams in the current round, plus one. If the number of teams is not a power of two, it is the lowest power of two greater than the number of teams in the event, plus one.
    • Knockout matches will be 28-board half-day matches, except the final match, which will be a 56-board full-day match. If there are 64 or fewer teams remaining at 1:00 pm Saturday, March 13, the semi-final match will also be a 56-board full-day match. If there are 32 or fewer teams remaining at 1:00 pm Saturday, March 13, the quarter-final will also be a 56-board full-day match.
    • With an original entry of only a few teams over a power of two, some teams will play a play-in match in order to reduce the field to a power of two for Saturday afternoon. These matches may be played on Thursday, March 11, or Friday, March 12, at 1:00 pm or 6:00 pm Eastern Time. If teams cannot agree on a time to play their match, it will be played at 1:00pm Eastern Time on Friday, March 12.
  3. Matches will be divided into 14-board segments. 28-board matches will consist of one pair of segments and 56-board matches of two pairs of segments.
  4. The time allowed for each 14-board segment is 100 minutes.
  5. Should any head-to-head match end in a tie, a play-off will be played as follows:
    • 28-board match will result in a 4-board play-off.
    • 56-board match will result in an 8-board play-off.
    • Should the first playoff end in a tie, continuing 4-board playoffs will be played until the tie is resolved.
    • Should one team refuse to participate in a playoff, their opponent shall be declared the winner of the match.
    • Should both teams refuse to participate in a playoff, neither team shall be declared the winner.

SEATING

  1. Teams are required to line up electronically. The web address and password for entering lineups will be sent to each team captain’s email after registration has closed.
  2. There shall be no seating rights in a round robin or in a play-off.
  3. The higher-ranked team must submit in which segments they intend to exercise their seeding rights 45 minutes before the start of the match.
    • In 28-board matches, the higher-ranked team will decide whether to exercise seating rights for the first or the second half.
    • In 56-board matches, the higher-ranked team will decide whether to exercise their seating rights in the first and fourth quarters or the second and third.
    • No submission or an untimely submission is deemed to be choosing the second half of two-segment matches or the first and fourth quarters of four-segment matches.
  4. For the first segment of a match, the team without seating rights must submit their seating information at least 30 minutes before the segment starts. The team with seating rights will thereafter transmit their lineup at least 15 minutes before the segment starts.
  5. For the second, third and fourth segments, the team without seating rights must submit their seating information at least 20 minutes before the segment starts. The team with seating rights will thereafter transmit their lineup at least 10 minutes before the segment starts.
  6. Replays of pairs are permitted throughout the event.

SUBSTITUTES

Substitutes will be permitted at the discretion of the DIC. No more than two substitutes at a time will be permitted on a team. See the General Conditions of Contest for KO Teams.

REPLACEMENTS

A team reduced to three members for cause will be permitted a replacement at the discretion of the DIC. A replacement for the finals receives match awards only. In no case is a team permitted to replace more than one player.

PENALTIES

The opposing team may not waive any penalties assessed their opponents for tardiness or slow play.

  1. Penalties for failure to seat a complete team at the announced game time will be per the General Conditions of Contest for KO Teams.
  2. Penalties for slow play will be per Appendix E.

CONCESSIONS

Concessions may be permitted at any time at the discretion of the DIC. Credit for participation and timely finishes in unplayed sessions will be assigned to players on the winning team at the discretion of the DIC.

SECURITY

  1. Throughout the event, players will be required to have an ongoing video or audio chat session with their screenmate (North and East are screenmates; South and West are screenmates). This chat can be done in a software of the players’ choice, or by telephone call; if none can be agreed, the default choice is Zoom. Alerts will be given in the online playing environment in order to have a record of these explanations.
  2. Kibitzing will not be allowed other than by tournament staff. Some matches will be on Delayed Vugraph.
  3. Every hand from each match may be viewed (at the time of play or at a later time) by officials designated by the ACBL. If any of these officials “flags” a hand for investigation, it will be sent to a players’ committee who will further investigate for unauthorized communication. Furthermore, any hand that a player in the team event submits for further investigation will be sent to the players’ committee.
  4. Players can submit hands for further investigation through this link.
  5. The players’ committee will have final authority and the ability to eject teams from the event and recommend disciplinary proceedings against players, pairs, or teams that they believe to be cheating in any manner. The specific method of cheating does not need to be discovered for these steps to be taken.
  6. Further, penalties for being found to be cheating in this event, as all ACBL online events, are the same as in live ACBL events, and may include, but are not limited to, probation, suspension, loss of masterpoints or titles, or expulsion.
Conditions of Contest, NAOBC 0-1500 and 0-5000 Knockouts

 NAOBC 0-1500 and 0-5000 Knockouts

The General Conditions of Contest (CoC) for Knockout (KO) Teams will apply to the KO portion of this event and the General CoC for Swiss Teams will apply to the group-play portion, subject to the following special CoC. The CoC for the NAOBC 0-1500 & 0-5000 KO Teams consist of these Special CoC, and Appendix O. These CoC may not be changed during the course of this event. The Director in Charge (DIC) will resolve any issue not specifically covered by these CoC.

CONDITIONS OF ENTRY

  1. The NAOBC 0-1500 and 0-5000 KOs are open to teams of four, five or six players, each of whom is a paid-up ACBL Member who has fewer than 1500 and 5000 masterpoints (MP), respectively, as of the ACBL computer run on March 6, 2021. Players who have experience in a bridge organization other than the ACBL must confirm their eligibility to participate in masterpoint-limited events prior to entering the event by emailing tournament@acbl.org.
  2. Entries for this event will be sold on BridgeWinners.com and will be limited to the first 128 teams that enter in each KO. All players must be ACBL Members in good standing. The entry deadline is 11:00 PM Eastern time, Wednesday, March 10, 2021. After this deadline and before noon Eastern, Friday, March 12, 2021, an entry may be accepted if, in ACBL Management’s opinion, it would improve the format of the event.
  3. Each team must select a captain, playing or non-playing, who will be responsible for all official representations to the TD or committee. The completed entry must include the names player numbers and BBO IDs of all participants, and a notation as to who is captain.
  4. The DIC will resolve any request for changes to the submitted entry.

PARTICIPATION REQUIREMENTS

  1. Each member of the team must play at least half of the boards in the group-play phase.
  2. Every team member must play at least half the boards of each KO match, exclusive of play-offs, in order to continue on that team for the remainder of the event. The team captain may submit an application for exemption from the requirements of this paragraph to the DIC but must do so (other than for emergencies) prior to entering the team.
  3. A team member granted an exemption must still play at least 40% of the boards, excluding play-off boards, for as long as the team survives to qualify for overall masterpoint awards and other privileges. No contestant may play any match after it has become mathematically impossible to play at least forty percent of the boards, excluding play-off boards, played by the team.
  4. An ineligible player is disqualified. If the disqualification occurs prior to the conclusion of the registration period, the team is not disqualified as long as it contains four or more eligible players. If a player is disqualified after the beginning of play, the team is disqualified. Any team reduced to fewer than three original members due to disqualification of ineligible members is disqualified. When a player’s team is disqualified after the correction period for the event expires, the disqualified team’s position remains vacant. If the deficiency is discovered prior to a match starting, the result of the preceding match is changed; or, if discovered during a match, that match may be forfeit. The result of no other match is altered.
  5. Players are required to post convention cards within the Bridge Base Online environment.

GROUP PLAY PHASE

  1. The two-session group-play portion of the event shall consist of groups of four and six teams who compete in a two-session round robin scored using the NABC+ Victory Point scale.
    • Groups of six will play five 10-board matches.
    • Groups of four will play three 16-board matches.
    • In a group of three, the two lower-seeded teams play a half-day match, and the top-seeded team receives a bye. The top seed then plays the loser of the first match.
    • Group assignments and conditions are listed below.
  2. Matches will be divided into two segments. The first segment of each match will be played during the first session, and the second segment of each match will be played during the second session. 36 minutes will be allowed for 5-board segments, and 60 minutes will be allowed for 8-board segments.
  3. In group play, the teams with the highest victory point total will advance to the KO phase.
  4. The following methods—in the order listed—will be used to resolve ties for advancement from the group-play phase to the KO phase:
    1. Head-to-head result
    2. Number of matches won, where a win is awarded one point, a tie is half a point, and a loss is worth zero points.
    3. Total Net IMPs for the day in all matches
    4. Coin flip

THE BRACKET

Teams will be ordered by the combined total of their masterpoints and eligibility points. To determine seeding and group assignment, seed numbers will be assigned by lot to teams 1-4, 5-8, 9-12, 13-16, 17-20, 21-24, 25-28, 29-32, 33-40, 41-48, 49-56, 57-64, 65-80, 81-96, and so on in groups of 16. Teams advancing from the group-play phase will retain their original seed numbers unless a higher-seeded team is eliminated. In that case, teams receive new seed numbers, moving up in their original order.

Example:  Seeds 1, 14, 20, 31, 33 and 48 are playing in a group of six where the conditions require that four teams out of each group advance to the KO phase where 32 teams will compete.  After a full day of play, the order of finish is 20, 1, 48, 31.  Team 1 will retain its original seed number, team 20 becomes 14, 31 becomes 20, and 48 becomes 31.

CONVENTIONS

Bidding and carding methods permitted, restricted or not permitted in this event are per the ACBL Open Convention Chart for the 0-5000 NAOBC KO & per the ACBL Basic+ Convention Chart for the 0-1500 NAOBC KO.

SCORING AND PLAY FOR KO PHASE

  1. The NAOBC 0-1500 & 0-5000 KO will be hosted and played on Bridge Base Online.
  2. The KO portion of this event is a single-elimination KO, with any fraction of an IMP constituting a win.
  3. If between 95 and 128 teams enter the event the KO phase will start with 64 teams and follow the schedule below:

Sunday, March 14, 2021                                        First session                                   Round of 64                                    half-day match

Sunday, March 14, 2021                                        Second Session                            Round of 32                                    half-day match

Saturday, March 20, 2021                                    First Session                                  Round of 16                                    half-day match

Saturday, March 20, 2021                                    Second Session                            Round of 8                                       half-day match

Sunday, March 21, 2021                                        First Session                                  Semifinal                                           half-day match

Sunday, March 21, 2021                                        Second Session                            Final                                                     half-day match

4. If between 47 and 94 teams enter the event the KO phase will start with 32 teams and follow the schedule below:

Sunday, March 14, 2021                                        First session                                   Round of 32                                    half-day match

Sunday, March 14, 2021                                        Second Session                            Round of 16                                    half-day match

Saturday, March 20, 2021                                    First Session                                  Round of 8                                       half-day match

Saturday, March 20, 2021                                    Second Session                            Semifinal                                           half-day match

Sunday, March 21, 2021                                        Both Sessions                                Final                                                     full-day match

5. If 46 or fewer teams enter the event, the KO phase will start with 16 teams and follow the schedule below:

Sunday, March 14, 2021                                        First session                                   Round of 16                                    half-day match

Sunday, March 14, 2021                                        Second Session                            Round of 8                                       half-day match

Saturday, March 20, 2021                                    Both Sessions                                Semifinal                                           full-day match

Sunday, March 21, 2021                                        Both Sessions                                Final                                                     full-day match

6. Matches will be divided into 12- or 13-board segments. 90 minutes will be allowed for each segment.

7. Should any match during the KO phase end in a tie, a play-off will be played as follows:

  • half-day match: 4-board play-off
  • full-day match: 6-board play-off
  • Should the first playoff end in a tie, continuing 2-board playoffs will be played until the tie is resolved.
  • Should one team refuse to participate in a playoff, their opponent shall be declared the winner of the match.
  • Should both teams refuse to participate in a playoff, neither team shall be declared the winner.

SEATING

  1. Teams are required to line up electronically. The web address and password for the lineup site will be sent to each team captain’s email after registration has closed.
  2. There shall be no seating rights in the group-play phase or in a playoff.
  3. During the group-play phase all teams must submit their lineups for the entire day thirty minutes before the start of the event.
  4. During the KO Phase, the higher-ranked team must submit in which segments they intend to exercise their seeding rights 45 minutes before the start of the match.
    • In half-day matches, the higher-ranked team will decide whether to exercise seating rights for the first or the second half.
    • In full-day matches, the higher-ranked team will decide whether to exercise their seating rights in the first and fourth quarters or the second and third.
    • No submission or an untimely submission is deemed to be choosing the second half of two-segment matches or the first and fourth quarters of four-segment matches.
  5. For the first segment of a match, the team without seating rights must submit their seating information at least 30 minutes before the segment starts. The team with seating rights will thereafter transmit their lineup at least 15 minutes before the segment starts.
  6. For the second, third and fourth segments, the team without seating rights must submit their seating information at least 20 minutes before the segment starts. The team with seating rights will thereafter transmit their lineup at least 10 minutes before the segment starts.
  7. Replays of pairs are permitted throughout the event.

SUBSTITUTES

Substitutes will be permitted at the discretion of the DIC. No more than two substitutes at a time will be permitted on a team. See the General Conditions of Contest for KO Teams.

REPLACEMENTS

A team reduced to three members for cause will be permitted a replacement at the discretion of the DIC. In no case is a team permitted to replace more than one player.

PENALTIES

The opposing team may not waive any penalties assessed their opponents for tardiness or slow play.

  1. Penalties for failure to seat a complete team at the announced game time during the Group Play Phase will be per the General Conditions for Swiss Teams.
  2. Penalties for failure to seat a complete team at the announced game time during the KO Phase will be per the General Conditions of Contest for KO Teams.

CONCESSIONS

Concessions may be permitted at any time at the discretion of the DIC. Credit for participation and timely finishes in unplayed sessions will be assigned to players on the winning team at the discretion of the DIC.

SECURITY

  1. Throughout the KO phase of this event, players will be required to have an ongoing video or audio chat session with their screenmate (North and East are screenmates; South and West are screenmates). This chat can be done in a software of the players’ choice, or by telephone call; if none can be agreed, the default choice is Zoom. Alerts will be given in the online playing environment in order to have a record of these explanations.
  2. Kibitzing will not be allowed other than by tournament staff. Some matches will be on Delayed Vugraph.
  3. Every hand from each match may be viewed (at the time of play or at a later time) by officials designated by the ACBL. If any of these officials “flags” a hand for investigation, it will be sent to a players’ committee who will further investigate for unauthorized communication. Furthermore, any hand that a player in the team event submits for further investigation will be sent to the players’ committee.
  4. Players can submit hands for further investigation through this link.
  5. The players’ committee will have final authority and the ability to eject teams from the event and recommend disciplinary proceedings against players, pairs, or teams that they believe to be cheating in any manner. The specific method of cheating does not need to be discovered for these steps to be taken.
  6. Further, penalties for being found to be cheating in this event, as all ACBL online events, are the same as in live ACBL events, and may include, but are not limited to, probation, suspension, loss of masterpoints or titles, or expulsion.
Conditions of Contest, NAOBC IMP Pairs

NAOBC IMP PAIRS

The General Conditions of Contest (CoC) for pairs events will apply to this event, subject to Appendix O and the following Special CoC. These CoC may not be changed during the event. Regarding any of the below, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

CONDITIONS OF ENTRY

The NAOBC IMP Pairs is open to any two paid-up ACBL Members.

CONVENTIONS

Bidding and carding methods permitted, restricted, or not permitted in these events are per the ACBL Open+ Convention Chart.

SCORING AND PLAY

  1. The NAOBC IMP Pair event will be hosted and played on Bridge Base Online. It will consist of four 24-board sessions: two qualifying and two final, scored by IMPs as follows:
    • Each pair’s result on a board shall be compared with every other pair’s result. The difference in the results shall be converted to IMPs subject to a maximum 17 IMP differential.
    • Calculate the average IMPs for that pair on that board.
    • The unrounded average IMPs is the pair’s score on that board (the score will be published rounded to the nearest hundredth).
    • A pair’s final score for a session is the sum of the scores on each board rounded to the nearest hundredth of an IMP.
  2. Each session will consist of 12 two-board rounds, and each round will last 14 minutes. Play will be curtailed when time for the round expires.  The Director will adjust the result of any deal that is curtailed due to the time constraint.
  3. Approximately 50% of the field will qualify for the two final sessions. Ties for the last qualifying position will be broken per ACBL regulations.
  4. There will be a carryover from the qualifying sessions to the final. The carryover will be calculated as follows:
    • The carryover can be no greater than the percentage of pairs who qualify times 48.
    • Carryovers will be equal to the difference between each pair’s score and the lowest qualifying score multiplied by the percentage of pairs that qualify. If this results in a maximum carryover greater than that permitted in 4(a), the highest carryover will be reduced to the maximum allowable and all other scores prorated.
  5. For purposes of qualifying or overall ranking, any hundredth of an IMP will be sufficient separation.
  6. Qualification of contestants for the finals shall be based on overall standing in the entire field, regardless of section or direction.
  7. Regarding any of the above, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

SECURITY

  1. Kibitzing will not be allowed other than by tournament staff.
  2. Any player or tournament official may submit a deal for investigation.  Deals submitted for investigation will go to the ACBL Recorder, who may send the information to a players’ committee.
  3. Players can submit deals for investigation through this link.
  4. The players’ committee will have final authority and the ability to eject pairs from the event and recommend disciplinary proceedings against players, pairs that they believe to be cheating in any manner. The specific method of cheating does not need to be discovered for these steps to be taken.
  5. Further, penalties for being found to be cheating in this event, as all ACBL online events, are the same as in live ACBL events, and may include, but are not limited to, probation, suspension, loss of masterpoints or titles, or expulsion.
Conditions of Contest, NAOBC 0-1500 & 0-5000 IMP Pairs

NAOBC 0-1500 & 0-5000 IMP PAIRS

The General Conditions of Contest (CoC) for pairs events will apply to this event, subject to Appendix O and the following special CoC. These CoC may not be changed during the event. Regarding any of the below, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

CONDITIONS OF ENTRY

The NAOBC 0-1500 & 0-5000 Premier Pairs are open to paid-up ACBL Members who have fewer than 1500 and 5000 masterpoints (MP), respectively, as of the ACBL computer run on March 6, 2021. Players who have experience in a bridge organization other than the ACBL must confirm their eligibility to participate in masterpoint-limited events prior to entering the event by emailing online.tournament@acbl.org.

CONVENTIONS

Bidding and carding methods permitted, restricted, or not permitted in this event are per the ACBL Open Convention Chart.

SCORING AND PLAY

  1. The NAOBC IMP Pair event will be hosted and played on Bridge Base Online. It will consist of four 24-board sessions: two qualifying and two final, scored by IMPs as follows:
    • Each pair’s result on a board shall be compared with every other pair’s result. The difference in the results shall be converted to IMPs subject to a maximum 17 IMP differential.
    • Calculate the average IMPs for that pair on that board.
    • The unrounded average IMPs is the pair’s score on that board (the score will be published rounded to the nearest hundredth).
    • A pair’s final score for a session is the sum of the scores on each board rounded to the nearest hundredth of an IMP.
  2. Each session will consist of twelve 2-board rounds, and each round will last 14 minutes. Play will be curtailed when time for the round expires.  The Director will adjust the result of any deal that is curtailed due to the time constraint.
  3. Approximately 50% of the field will qualify for the two final sessions. Ties for the last qualifying position will be broken per ACBL regulations.
  4. There will be a carryover from the qualifying sessions to the final. The carryover will be calculated as follows:
    • The carryover can be no greater than the percentage of pairs who qualify times forty-eight.
    • Carryovers will be equal to the difference between each pair’s score and the lowest qualifying score multiplied by the percentage of pairs that qualify. If this results in a maximum carryover greater than that permitted in 4a, the highest carryover will be reduced to the maximum allowable and all other scores prorated.
  5. For purposes of qualifying or overall ranking, any hundredth of an IMP will be sufficient separation.
  6. Qualification of contestants for the final shall be based on overall standing in the entire field, regardless of section or direction.
  7. Regarding any of the above, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

SECURITY

  1. Kibitzing will not be allowed other than by tournament staff.
  2. Any player or tournament official may submit a deal for investigation.  Deals submitted for investigation will go to the ACBL Recorder, who may send the information to a players’ committee.
  3. Players can submit deals for investigation through this link.
  4. The players’ committee will have final authority and the ability to eject pairs from the event and recommend disciplinary proceedings against players, pairs that they believe to be cheating in any manner. The specific method of cheating does not need to be discovered for these steps to be taken.
  5. Further, penalties for being found to be cheating in this event, as all ACBL online events, are the same as in live ACBL events, and may include, but are not limited to, probation, suspension, loss of masterpoints or titles, or expulsion.
Conditions of Contest, NAOBC PREMIER PAIRS

NAOBC PREMIER PAIRS

The General Conditions of Contest (CoC) for pairs events will apply to this event, subject to Appendix O and the following special CoC. These CoC may not be changed during the event. Regarding any of the below, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

CONDITIONS OF ENTRY

The NAOBC Premier Pairs is open to any two paid-up ACBL Members.

CONVENTIONS

Bidding and carding methods permitted, restricted, or not permitted in these events are per the ACBL Open+ Convention Chart.

SCORING AND PLAY

  1. This NAOBC Pair event will be hosted by and played on Bridge Base Online. It will consist of four twenty-four board sessions: two qualifying and two final.
  2. Each session will consist of twelve 2-board rounds, and each round will last 14 minutes. Play will be curtailed when time for the round expires.  The Director will adjust the result of any deal that is curtailed due to the time constraint.
  3. Approximately fifty percent of the field will qualify for the two final sessions. Ties for the last qualifying position will be broken per ACBL regulations.
  4. There will be a carryover from the qualifying sessions to the final. The carryover will be calculated per ACBL regulations, but the spread from top to bottom can be no greater than four boards.
  5. For purposes of qualifying or overall ranking, any fraction of a matchpoint will be sufficient separation.
  6. Qualification of contestants for the final shall be based on overall standing in the entire field, regardless of section or direction.
  7. Regarding any of the above, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

SECURITY

  1. Kibitzing will not be allowed other than by tournament staff.
  2. Any player or tournament official may submit a deal for investigation.  Deals submitted for investigation will go to the ACBL Recorder, who may send the information to a players’ committee.
  3. Players can submit deals for investigation through this link.
  4. The players’ committee will have final authority and the ability to eject pairs from the event and recommend disciplinary proceedings against players, pairs that they believe to be cheating in any manner. The specific method of cheating does not need to be discovered for these steps to be taken.
  5. Further, penalties for being found to be cheating in this event, as all ACBL online events, are the same as in live ACBL events, and may include, but are not limited to, probation, suspension, loss of masterpoints or titles, or expulsion.
Conditions of Contest, NAOBC 0-1500 & 0-5000 PREMIER PAIRS

NAOBC 0-1500 & 0-5000 PREMIER PAIRS

The General Conditions of Contest (CoC) for pairs events will apply to this event, subject to Appendix O and the following special CoC. These CoC may not be changed during the event. Regarding any of the below, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

CONDITIONS OF ENTRY

The NAOBC 0-1500 & 0-5000 Premier Pairs are open to paid-up ACBL Members who have fewer than 1500 and 5000 masterpoints (MP), respectively, as of the ACBL computer run on March 6, 2021. Players who have experience in a bridge organization other than the ACBL must confirm their eligibility to participate in masterpoint-limited events prior to entering the event by emailing online.tournament@acbl.org.

CONVENTIONS

Bidding and carding methods permitted, restricted, or not permitted in this event are per the ACBL Open Convention Chart.

SCORING AND PLAY

  1. This NAOBC Pair event will be hosted by and played on Bridge Base Online. It will consist of four 24-board sessions: two qualifying and two final.
  2. Each session will consist of twelve two-board rounds, and each round will last 14 minutes. Play will be curtailed when time for the round expires. The Director will adjust the result of any deal that is curtailed due to the time constraint.
  3. Approximately 50% of the field will qualify for the two final sessions. Ties for the last qualifying position will be broken per ACBL regulations.
  4. There will be a carryover from the qualifying sessions to the final. The carryover will be calculated per ACBL regulations, but the spread from top to bottom can be no greater than four boards.
  5. For purposes of qualifying or overall ranking, any fraction of a matchpoint will be sufficient separation.
  6. Qualification of contestants for the final shall be based on overall standing in the entire field, regardless of section or direction.
  7. Regarding any of the above, any of Appendix O, or any of the General CoC of ACBL pairs events, the decision of the DIC shall be final.

SECURITY

  1. Kibitzing will not be allowed other than by tournament staff.
  2. Any player or tournament official may submit a deal for investigation.  Deals submitted for investigation will go to the ACBL Recorder, who may send the information to a players’ committee.
  3. Players can submit deals for investigation through this link.
  4. The players’ committee will have final authority and the ability to eject pairs from the event and recommend disciplinary proceedings against players, pairs that they believe to be cheating in any manner. The specific method of cheating does not need to be discovered for these steps to be taken.
  5. Further, penalties for being found to be cheating in this event, as all ACBL online events, are the same as in live ACBL events, and may include, but are not limited to, probation, suspension, loss of masterpoints or titles, or expulsion.
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