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No. 125 , Apr. 1998

4001 - Gianni Donati
diagrammes 125, 04/1998
(This problem was later found to be cooked)

[rnbqkBnr/pppppp1p/8/1Q3P1P/R1P1PP2/1B1P4/P7/1N2K3]

13+14. Shortest proof game in 16.5 moves

[rnbqkBnr/pppppp1p/8/1Q3P1P/R1P1PP2/1B1P4/P7/1N2K3]

Link: Solution


4002 - N. Plaksin and A. Zolotarev
diagrammes 125, 04/1998

[4n3/p1pPp3/2R1pp2/2p1BK2/2P2pr1/3P1k1b/4NPNp/3B2nQ]

11+13. Shortest trip of the Bd1?

[4n3/p1pPp3/2R1pp2/2p1BK2/2P2pr1/3P1k1b/4NPNp/3B2nQ]

Link: Solution


4003 - Paul Raican
diagrammes 125, 04/1998
(Corrected version of 3808)

[4k3/3p3b/8/8/1K6/8/6p1/8]

1+4. Retract 8 moves and help-stalemate in 1 (Proca-retractor, Sentry chess, Anti-Circe)

[4k3/3p3b/8/8/1K6/8/6p1/8]

Link: Solution