[Retros] Three SPG's from Paul Monsky

[Joost de Heer]

> Crossed captures have been extensively studied. I remember a PJ (by Andrey

> Frolkin ?) showing 8 of them by the same side !


This has been shown several times. Here are the best (IMO) and the 
fastest known to me:

Unto Heinonen
Springaren 1995
k1q2s2/1b4s1/pppppppp/6r1/1r3b2/8/8/RSBQKBSR (8+16)
SPG 25.0

1. b4 Nh6 2. b5 Nf5 3. b6 axb6 4. g4 Ra4 5. g5 Rb4 6. g6 hxg6 7. a4 Rh5 
8. a5 Rg5 9. a6 bxa6 10. h4 Bb7 11. h5 Qc8 12. h6 gxh6 13. f4 Ng7 14. f5 
Kd8 15. f6 exf6 16. c4 Bd6 17. c5 Bf4 18. c6 dxc6 19. d4 Nd7 20. d5 Nf8 
21. d6 cxd6 22. e3! Kc7 23. e4 Kb8 24. e5 Ka8 25. e6 fxe6

Michel Caillaud
Retros Mailing List 1999-Jul-10
4k1s1/1b4b1/pppppppp/8/3s4/8/1r1PP1rq/1S1QK1S1 (6+16)
SPG 18.0

1. g4 Nc6 2. g5 Nd4 3. g6 hxg6 4. c4 Rxh2 5. Bh3 Rg2 6. Be6 fxe6 7. Rh6 
gxh6 8. c5 Bg7 9. c6 dxc6 10. b4 Qd6 11. b5 Qh2 12. b6 axb6 13. f4 Rxa2 
14. Ba3 Rb2 15. Bd6 cxd6 16. Ra6 bxa6 17. f5 Bb7 18. f6 exf6

The proofgame you're remembering is a proofgame by Andrei Frolkin and 
Oksana Kartseva (first version is 
http://www.janko.at/Retros/Schwalbe/N166.htm#9723), it's been cooked and 
'corrected' and cooked again several times, and I don't think there's a 
final correction.

Joost