If the number of players is not divisible by six, then one division may have eight or ten players. If the number of players is odd, one division will have a bye.
Players are numbered 1, 2, 3, 4, 5 and 6.
Round 1 pairings: 1-6, 2-3, 4-5.
Round 2 pairings: 1-5, 2-4, 3-6.
Round 3 pairings: 1-4, 2-6, 3-5.
Round 4 pairings: 1-3, 2-5, 4-6.
Round 5 pairings: 1-2, 3-4, 5-6.
Players are numbered 1, 2, 3, 4, 5, 6, 7 and 8. In the first three rounds, two groups of four players play round robins, and may want to all sit near each other.
Round 1 pairings: 1-7, 3-5, 2-8, 4-6.
Round 2 pairings: 1-5, 3-7, 2-6, 4-8.
Round 3 pairings: 1-3, 5-7, 2-4, 6-8.
Based on Round 3 standings, players are assigned "pairings letters". The highest ranked among 1,3,5,7 is called A, followed by B, C and D. The players formerly known as 2,4,6,8 are named E, F, G and H according to their current standings.
Round 4 pairings: A-F, B-E, C-H, D-G.
Round 5 pairings: A-E, B-F, C-G, D-H
Players are numbered 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10.
Round 1 pairings: 1-9, 2-6, 3-7, 4-5, 8-10
Round 2 pairings: 1-7, 2-3, 4-10, 5-9, 6-8
Round 3 pairings: 1-5, 2-10, 3-9, 4-8, 6-7
Round 4 pairings: 1-3, 2-4, 5-8, 6-10, 7-9
Round 5 pairings: King-of-the-Hill, repeats possible.
John Chew <jjchew@math.utoronto.ca>