The Retrograde Analysis Corner

Die Schwalbe

No. 184, August 2000

10859 - Andrei Kornilov
Die Schwalbe Heft 184, Aug. 2000

[4KQbk/2prPPR1/3pPb1R/3pp1p1/p4p2/8/PBp1PP2/8]

10860 - Alexander Zolotarev
Die Schwalbe Heft 184, Aug. 2000

[8/3pP3/2pp4/b1K1p2p/1np4q/b1kP4/pRNN4/BBRrQ3]

10+13. Every queen made exactly one move. Which queen made the geometrically longest move?

10861 - Andrei Kornilov & Andrei Frolkin
Die Schwalbe Heft 184, Aug. 2000

[rn2KN1B/ppprP1q1/2PpRPkP/1P2pppR/7p/8/3P3P/7n]

10862 - Stefano Spinelli
Die Schwalbe Heft 184, Aug. 2000

[5r2/8/8/8/8/3K4/3n4/kr6]

1+4. Retract one white and one black move, and then play one black move, allowing a s#1.

10863 - Anatoli Vasilenko & Andrei Frolkin
Die Schwalbe Heft 184, Aug. 2000

[rnbqkbnr/1pppp1pp/5B1P/7R/5P2/3K4/2NPP1p1/R2Q1BN1]

12+15. Shortest proof game?
(a): There could've been a promotion
(b): There were no promotions

10864 - Satoshi Hashimoto
Die Schwalbe Heft 184, Aug. 2000

[4k1nr/pp2nppp/4p1r1/3p4/P2b4/1b2P3/1PP1PPPP/RNBQKBNR]

16+14. Proof game in 14.5 moves