ALL DE FR ES IT

Logo

Problemesis

No. 32, April 2003

R81 - Bernd Graefrath
Problemesis 32, April 2003

[rnbqkbnr/p1pppppp/8/8/1p3NP1/7P/PPPPPP2/R1BQK2B]

14+15. Position after the 12th black move: how many switchbacks?

[rnbqkbnr/p1pppppp/8/8/1p3NP1/7P/PPPPPP2/R1BQK2B]

Link: Solution


R82 - Satoshi Hashimoto
Problemesis 32, April 2003

[nnbqkbr1/rppppppp/pB6/3B3R/1KQR1PPP/2NPP3/PPP4N/8]

16+16. Proof game in 25.0 moves

[nnbqkbr1/rppppppp/pB6/3B3R/1KQR1PPP/2NPP3/PPP4N/8]

Link: Solution


R83 - Alessandro Cuppini
Problemesis 32, April 2003

[8/8/4PPKR/6pP/3Pr1pk/4P3/5PP1/8]

9+4. Retract 1 white move for a #1 (Help-retractor)

[8/8/4PPKR/6pP/3Pr1pk/4P3/5PP1/8]

Link: Solution


R84 - Thierry Le Gleuher
Problemesis 32, April 2003

[rNbq1bNr/p2pp1pp/7k/8/5R2/8/1PP1P1P1/1nBQKBn1]

11+13. Proof game in 13.5 moves (C+)

[rNbq1bNr/p2pp1pp/7k/8/5R2/8/1PP1P1P1/1nBQKBn1]

Link: Solution


R85 - Thierry Le Gleuher
Problemesis 32, April 2003

[QnB2Bnr/p2pp1pp/1k6/8/8/8/Pq1PN1PP/RNb1KbR1]

12+12. Proof game in 15.5 moves (C+)

[QnB2Bnr/p2pp1pp/1k6/8/8/8/Pq1PN1PP/RNb1KbR1]

Link: Solution


R86 - Thierry Le Gleuher
Problemesis 32, April 2003

[2rQKbnr/pBpn2pp/5p2/3pp3/7P/3RP1P1/P2PP3/RNBqk1N1]

14+14. Proof game in 19.5 moves (C+)

[2rQKbnr/pBpn2pp/5p2/3pp3/7P/3RP1P1/P2PP3/RNBqk1N1]

Link: Solution


R87 - Alessandro Cuppini
Problemesis 32, April 2003

[2Kb4/q2rp1p1/2p1p3/1rRpRb2/1pPkPp2/3n4/1P3P2/8]

7+14. h#2 (Retro variants)

[2Kb4/q2rp1p1/2p1p3/1rRpRb2/1pPkPp2/3n4/1P3P2/8]

Link: Solution


R88 - Michel Caillaud
Problemesis 32, April 2003

[r1n5/pp4pp/1bn3k1/2pp2p1/3r2b1/1q6/PPP2PPP/RNBQKBNR]

14+15. Proof game in 17.0 moves (C+)

[r1n5/pp4pp/1bn3k1/2pp2p1/3r2b1/1q6/PPP2PPP/RNBQKBNR]

Link: Solution


R89 - Michel Caillaud
Problemesis 32, April 2003

[r3k1B1/b2pp3/K3pp2/1p3p1N/3pQP2/4PrP1/1P2PP2/6N1]

11+11. h#1 a) diagram b) bNa7

[r3k1B1/b2pp3/K3pp2/1p3p1N/3pQP2/4PrP1/1P2PP2/6N1]

Link: Solution