The Retrograde Analysis Corner

Problem Paradise

Various Problems

PR01 - Hitoshi Yanami
Problem Paradise, Spring 1998

[3qkbnr/p1pppppp/n7/8/2P1b1P1/1P5P/1P1PPP2/2B1K2r]

10+15. Proof game in 12.0 moves

PR02 - Michel Caillaud
Problem Paradise, Spring 1998

[b2r2n1/p2ppp2/1q4pp/1pb5/1kr5/8/PP2PPPP/RNBQKBNR]

14+14. Proof game in 16.5 moves

PR03 - Hitoshi Yanami
Problem Paradise, Spring 1998

[6b1/p1p2p2/1k2pnpn/1p4Bp/3p2B1/PR1P3N/PKP1PP1q/2RQ1N2]

14+13. Proof game in 19.0 moves

PR04 - Satoshi Hashimoto
Problem Paradise, Spring 1998

[rnbqkbnr/1p1p1p1p/1P6/1B2RR2/1PKP1B2/1PNP1PN1/Q4P1P/8]

16+12. Proof game in 26.5 moves

H14 - Toshio Kusanagi
Problem Paradise, Winter 1998

[R3nB2/Pppk2Pp/3p2Pp/3Kp2p/3P4/4p1P1/6P1/8]

9+10. Retract one move, then mate in 1

H15 - Hitoshi Yanami
Problem Paradise, Winter 1998

[4kbn1/1pp2pp1/1pp2pp1/88/P2PP2P/P2PP2P/RN2nBK1]

12+12. Proof game in 14.5 moves

H16c - Hitoshi Yanami
Problem Paradise 11, Autumn 1998 (for the corrected version)

[2kr4/p1p1nppp/n1p1pQ2/4Nbq1/rb1B4/RPN1PPP1/P1P1P2P/4K2R]

15+15. Proof game in 20.0 moves

1 - Yuu Funayama
Problem Paradise, Summer 1996
Comm.

[3B3R/5kpp/7p/3PpK2/8/6P1/88]

5+5. Retract 1 move, then mate in 1 (Circe)

2 - Hitoshi Yanami
Problem Paradise, Autumn 1997

[rnbqkbnr/p1pppppp/8/6BB/6Q1/3PPP2/1PP1NP1P/R4RK1]

14+15. Proof game in 8.5 moves

3 - Hitoshi Yanami
Problem Paradise, Autumn 1997

[3krbnr/BQqppppp/1pp5/n2N4/1P2b3/p1P5/P2PPPPP/3KRBNR]

16+16. Proof game in 13.5 moves

4 - Hitoshi Yanami
Problem Paradise, Autumn 1997
(This problem was later found to be cooked)

[rrknnq2/p1pppp1p/K4Rp1/Rp4Q1/P3PB1P/1B1Pbb2/1PP2PP1/1N4N1]

16+16. Proof game in 21.0 moves