The Problemist

July 1997

R264 - Ronald Turnbull
The Problemist, July 1997

[2k1K3/p1pQ1p2/3ppPn1/4p3/8/PP1P3P/p1p5/7B]

8+10. (Proca-retractor, Backward A Posteriori) Retract 52 moves and selfmate in 1

R265 - Peter Wong
The Problemist, July 1997

[r2q2k1/ppp2ppp/n1pp1n2/8/3bP1P1/2Pr1P2/PP1P2P1/RNB1KBN1]

14+15. Position after Wh. 16th move. Game score?