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Individual-pairs tournament design for 20 players

Julian D. A. Wiseman, June 2003

This 20-player individual-pairs tournament design, last updated in June 2003, is based on an original by Matt Fayers of The Department of Mathematics at Queen Mary, University of London (formerly of The Department of Pure Mathematics and Mathematical Statistics at The University of Cambridge).

Available formats:
PDF (A4) Schedule, in score-sheet, with running totals; Schedule by player; Blank score sheet, with running totals
PDF (A3) Schedule, in score-sheet, with running totals; Schedule by player; Blank score sheet, with running totals
PDF (USL) Schedule, in score-sheet, with running totals; Schedule by player; Blank score sheet, with running totals
Text Human-readable schedule, machine-readable schedule
Also see the individual-pairs explanation and the links to designs for other numbers of players.

Properties of this tournament design:


       i       ii       iii      iv        v    
 1  T+A:F+L  B+C:Q+O  D+N:E+H  G+S:R+J  I+M:K+P 
 2  K+O:M+R  F+P:G+J  I+B:A+L  T+C:H+N  D+E:S+Q 
 3  F+G:B+S  K+D:C+N  T+E:J+P  M+Q:O+A  H+R:I+L 
 4  J+A:K+N  T+G:L+R  O+S:Q+C  H+I:D+B  M+F:E+P 
 5  O+H:G+R  Q+B:S+E  J+K:F+D  L+C:M+P  T+I:N+A 
 6  T+K:P+C  L+M:H+F  N+E:O+R  Q+J:I+A  S+D:B+G 
 7  B+F:D+I  P+G:Q+A  S+L:K+C  T+M:R+E  N+O:J+H 
 8  P+Q:L+J  B+N:M+E  T+O:A+G  D+H:F+K  R+I:S+C 
 9  A+K:B+E  T+Q:C+I  F+J:H+M  R+S:N+L  D+P:O+G 
10  F+R:Q+I  H+L:J+O  A+B:P+N  C+M:D+G  T+S:E+K 
11  T+B:G+M  C+D:R+P  E+O:F+I  H+A:S+K  J+N:L+Q 
12  L+P:N+S  G+Q:H+K  J+C:B+M  T+D:I+O  E+F:A+R 
13  G+H:C+A  L+E:D+O  T+F:K+Q  N+R:P+B  I+S:J+M 
14  K+B:L+O  T+H:M+S  P+A:R+D  I+J:E+C  N+G:F+Q 
15  P+I:H+S  R+C:A+F  K+L:G+E  M+D:N+Q  T+J:O+B 
16  T+L:Q+D  M+N:I+G  O+F:P+S  R+K:J+B  A+E:C+H 
17  C+G:E+J  Q+H:R+B  A+M:L+D  T+N:S+F  O+P:K+I 
18  Q+R:M+K  C+O:N+F  T+P:B+H  E+I:G+L  S+J:A+D 
19  B+L:C+F  T+R:D+J  G+K:I+N  S+A:O+M  E+Q:P+H 

Usual disclaimer and copyright terms apply.