The Retrograde Analysis Corner

Problem Paradise

No. 13

R001 - Satoshi Hashimoto
Problem Paradise 13

[rnb1kbnr/2pp2pp/B2p1p2/3N4/8/p1PP1Q2/P1P2PPP/2BRK1NR]

15+14. Proof game in 15.5 moves

R002 - Akayo Okaya
Problem Paradise 13

[1nB2bnr/2p1p1pp/r3p3/p2p3k/6b1/4P3/1PPP1PPP/RNBQK1NR]

15+14. Proof game in 9.0 moves
(b)Proof game in 9.5 moves

R003 - Akayo Okaya
Problem Paradise 13

[rnb3nk/pppp1p1p/4p2b/8/6Pq/N2P4/PPPR3P/2K2rNR]

11+15. Proof game in 11.0 moves

R004 - Michel Caillaud
Problem Paradise 13

[4k1nr/pppRp1pp/3pqB1Q/5p2/4bP1P/3P4/PPPrP1P1/RN2K1N]

15+14. Proof game in 18.5 moves

R005 - Gianni Donati
Problem Paradise 13

[6n1/p1pnpkrb/rp2ppp1/7p/P2q3P/NPbR2P1/2PPPP1N/4KRBQ]

15+16. Proof game in 19.5 moves

R006 - Thomas Volet
Problem Paradise 13

[3b4/1p2p1p1/1p2p3/4Kp2/3P1Rp1/1P2k1P1/2PRrNPB/1b1BrnQN]

W012 - Akayo Okaya
Problem Paradise 13

[r1bqkbnr/ppp3pp/8/4p3/8/5pPN/PPPPPP1P/RNBQK1nR]

15+15. Proof game in 8.5 moves