1 [Event "Rook ambiguities"]
5 [White "GNU Chess 5.05"]
11 1. d4 c5 2. dxc5 b6 3. cxb6 h6 4. bxa7 h5 5. axb8=R Rxa2 6. Ra8
12 d5 7. R8xa2 Bb7 8. b4 f6 9. c4 e6 10. Nc3 Qa8 11. Bb2 Qb8
13 12. Qd3 Qa8 13. Nf3 Qb8 14. g4 Qa8 15. Bh3 Qb8 16. O-O Qa8
14 17. Ba3 Qb8 18. Rb2 Qa8 *
16 [Event "Bishop ambiguities"]
20 [White "GNU Chess 5.05"]
26 1. b4 a5 2. bxa5 c6 3. a6 c5 4. a7 c4 5. axb8=B e6 6. Bd6 e5
29 [Event "Knight ambiguities"]
37 1. d4 Nf6 2. Nd2 Nc6 *