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Round Robin |
Pairings |
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| Porter |
By
board number. |
Normal Colors |
Rewrite
screen |
| Crenshaw |
Sequential
Players. |
Reversed Colors |
New screen |
Crenshaw
& Sequential are USCF defaults. |
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Min.
Moves |
2nd
half of Round Robin or splice in late players |
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Court
Balanced |
| Enter number of players (do last): |
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Check for double round robin |
(Internal) Board Number Players are
initially seated in every other chair and rotate by at most one
position.
Sequential players As above except except only odd boards are
displayed from left to right starting from the "ghost" board,
then even boards from right to left. Because sequential players were seated in
every other chair, they will appear to be seated next to the next
sequential higher or lower pairing numbered players. This is how the
tables appear in Official Rules (US. Chess Federation).
Min. Moves Same as sequential except that alternate rounds are
displayed in reverse order and only half the players move each round. |
Example for 12 players in board
order in Rd. 1:
1: 1-12 7-6
11-2 8-5 10-3 9-4
12 players on Sequential Players in Rd. 1 (Same for Min. Moves, but
reverses on even numbered rounds):
1: 1-12 11-2 10-3
9-4 8-5 7-6 |
Porter is a simple modification to the original Berger
tables which started with Player 1 starting with two whites while
another player started with two blacks. E.g., with 12 players, 1-6
had white against 12-7 respectively and 7 starts with two blacks.
The modification is 1 has white against 12, but 2-6 have black
against 11-7. Click here for an example. Crenshaw
corrected the same problem, but opponents are in descending order.
In chess, the first opponent has White. For other games or sports this may also
indicate color or home/away status, who calls a coin toss, the winner of the coin
toss, or ignored. Court
Balanced isn't applicable to chess but may be helpful when
assigning tennis courts or time slots randomly.
To generate random pairing numbers, click here.
To display each player's schedule in Porter order, click here;
players can create their own schedules here.
© 2009 by Warren Porter
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