The Retrograde Analysis Corner

Die Schwalbe

No. 151, February 1995

R1 - Caillaud, Michel
Problemkiste, 08/1994

[rnbqkbnr/pppppppp/8888/P3PPPP/4KBNR]

9+16. Shortest proof game in 9.5 moves (Andernach chess)

R2 - Ring, Ulrich
feenschach, Aug. 1985
Ded. Hans Gruber
1st Hon. Mention feenschach 1985

[rnbqkbnr/pppRpppp/B1p5/8/P1K5/2P5/1P1P1PPP/2BN3R]

13+16. Shortest proof game in 13.0 moves

R3 - Dunsany, Edward John Moreton Drax Plunk
The Week-End Problems Book, 1932

[rnbkqbnr/pppppppp/88888/RNBQKBNR]

8+16. Mate in 4

8756 - Keym, Werner
Die Schwalbe Heft 151, 02/1995

[88/6B1/8/2Q3NB/4Pk2/4N2P/6K1]

8+1. Add one piece and then mate in 1. How many solutions?

8757v - Zolotarew, A.
Die Schwalbe Heft 160, 08/1996 (for the corrected version)

[3bRrQq/1pp1Ppnp/1Ppp1K2/5p2/5k2/2P2Pr1/1P3PPB/6N1]

12+13. Last 26 single moves?

8758 - Haas, Josef
Die Schwalbe Heft 151, 02/1995

[2R5/2R5/rpp1p1p1/1r4Pp/pPBNN1nn/K1PP2B1/PP3PP1/7Q]

16+10. Add the bl. King so that he is checkmated

8759 - Zolotarew, A.
Die Schwalbe Heft 151, 02/1995

[8/p2pp3/4pp2/1p3K2/6r1/4Pkpb/3PNPRq/3QRrBB]

10+12. Least number of Queen moves?

8760 - Wong, Peter
Die Schwalbe Heft 151, 02/1995

[2R2rk1/3p1pp1/1q3p2/p6B/7p/1p2PN1P/1PPBPPKP/R2Q1N2]

15+10. Shortest proof game in 20.5 moves

8761 - Bachmann, Karlheinz
Die Schwalbe Heft 151, 02/1995

[4B3/p2NQbpk/1p1ppprp/2p1N1r1/2P1n1R1/1P1PPPRP/P2nqBPK/4b3]

16+16. Shortest proof game in 34.0 moves

8762 - Haas, Josef
Die Schwalbe Heft 151, 02/1995

[n7/Rb6/p7/8/6p1/6pk/rpPr4/1KQRn3]

5+10. sh#1 (3 Solutions)
Auxiliary question: why not h#1?

8763 - Louridas, Panos
Die Schwalbe Heft 151, 02/1995

[1bbbbbb1/bbbbbbbb/bbbbbbbb/bbbbbbbb/bbbbbbbb/bbbbbbbb/bbbbbbbb/bbbbbbbb]

0+62. (a) Replace all 62 Bs by two (fairy) men, so that there is the same number of variations in a seriesmover!
(b) Which mathematician could give his name to these variations?