The Retrograde Analysis Corner

feenschach

No. 109, Nov. 1993

R1 - Bonavoglia, Marco
Hon. Mention Andernach TT, 1993

[rn1qkbnr/pp2pppp/6b1/8/4P3/2p5/PPPPBPPP/RNBQK1NR]

16+15. Shortest proof game in 6.5 moves (Andernach chess)

R2 - Caillaud, Michel
Comm. Andernach TT, 1993

[rnbqkbnr/ppp1pppp/8888/PPPPPPPP/RNBQKB1R]

15+15. Shortest proof game in 3.0 moves (Andernach chess)

6556 - Raican, Paul
feenschach, Nov. 1993

[rnb1k1n1/ppp1pp1p/8/1Q6/2N5/3q4/PPPPPPPP/brQ1KBNR]

15+14. Proof game in 7.5 moves (Augsburg chess)

6557 - Plaksin, Nikita Michailowitsch
feenschach, Nov. 1993

[8888/K7/8/b7/kB6]

2+2. Wh. retracts one move and then =1

6558 - Caillaud, Michel
feenschach, Nov. 1993

[n7/3pp2b/k2q1n2/pN2Bp2/3P1rrP/1R4Q1/PPP1PPP1/RNb1KB2]

16+12. Shortest proof game in 24.0 moves (Andernach chess)

6559 - Wilts, Gerd and Geissler, Norbert
feenschach, Nov. 1993

[3k4/88888/P4K2/8]

2+1. Shortest proof game in 16.5 moves

6560 - Ruth, Emiliano F.
feenschach, Nov. 1993

[1B1b2r1/2pn4/kppp4/p1n1P1P1/2KP4/P6P/1PP2PP1/8]

11+10. Proca-retractor. Wh. retracts 3 moves and mates in 1 (Andernach chess)

6561 - Ruth, Emiliano F.
feenschach, Nov. 1993

[rbN1k1br/bNp1pp1b/1p4p1/88/P3P2P/2Pp1P2/R1BQKB1R]

13+13. Advantage game. Given that black 0-0-0 is legal, which white Officer did White remove from the board before starting?
(a) Diagram; (b) Nc8 -> d7; (c) Nc8 -> a6