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Die Schwalbe

No. 204, Dec 2003

12111 - Andrei Kornilov, Andrei Frolkin
Die Schwalbe, 204, Dec 2003

[3b1KQ1/p1pprp2/4pR1k/5pRq/6PB/4P1pb/2PP1PP1/3N1N2]

13+12. Add a white piece on the h-line. a) Last move? b) Last move by the black king?

[3b1KQ1/p1pprp2/4pR1k/5pRq/6PB/4P1pb/2PP1PP1/3N1N2]


12112 - Josef Haas(+), Günther Weeth, Werner Keym
Die Schwalbe, 204, Dec 2003

[BBBB4/Rpp1k1pp/BRppp3/Bp6/B7/B7/K7/B7]

11+9. Retract 3 half-moves (white starts the retraction). Can white prevent black castling? (Proca retractor)

[r3k3/pppp2p1/8/4K3/3p4/5P1P/1PPPP1P1/2B2BnR]


12113 - Dmitri Baibikov
Die Schwalbe, 204, Dec 2003

[BBBB4/Rpp1k1pp/BRppp3/Bp6/B7/B7/K7/B7]

12+9. Which bishops are promoted?

[BBBB4/Rpp1k1pp/BRppp3/Bp6/B7/B7/K7/B7]


12114 - Jens Guballa
Die Schwalbe, 204, Dec 2003

[rnb1k3/ppppp2p/5ppb/5nR1/3N3Q/6Pq/PPPPP1B1/RNB2K2]

14+15. Shortest proof game 14.5 moves

[rnb1k3/ppppp2p/5ppb/5nR1/3N3Q/6Pq/PPPPP1B1/RNB2K2]


12115 - Christoph Fieberg
Die Schwalbe, 204, Dec 2003

[1nB1k1n1/Ppp2p2/4p3/8/4p3/1p6/1P1P1PPR/1bKNrqNR]

11+12. Shortest proof game in 19.0 moves

[1nB1k1n1/Ppp2p2/4p3/8/4p3/1p6/1P1P1PPR/1bKNrqNR]


12116 - Reto Aschwanden
Die Schwalbe, 204, Dec 2003

[3rbn2/1p1q1k2/2p2r1n/2p2p1p/8/p3b1K1/PPPPP1P1/RNBQ1BNR]

14+14. Shortest proof game in 19.5 moves

[3rbn2/1p1q1k2/2p2r1n/2p2p1p/8/p3b1K1/PPPPP1P1/RNBQ1BNR]


12117 - Wolfgang Dittmann
Die Schwalbe, 204, Dec 2003

[2kr2b1/p6p/p6P/p6N/p6N/r6P/7P/2nnK3]

6+11. Retract 5 half-moves for a mate in one move (Proca retractor, Anticirce)

[2kr2b1/p6p/p6P/p6N/p6N/r6P/7P/2nnK3]


12118 - Henryk Grudzinsky
Die Schwalbe, 204, Dec 2003

[8/3pk2p/8/8/8/8/3PK2P/1R6]

4+3. Anti-Andernach-Chess. Shortest proof game in 14.5 moves

[8/3pk2p/8/8/8/8/3PK2P/1R6]

Anti-Andernach-Chess: A piece changes colur when moving, and keeps its color when capturing


12119 - Ion Mururasu, Vlaicu Crisan
Die Schwalbe, 204, Dec 2003

[1nbqkbnr/1pppp1pp/8/p7/5K2/8/PPPPPPPP/RNBQ1BNR]

16+14. a) Shortest proof game  in 5.5 moves (2 solutions) b) +bPf7 (Einstein Chess)

[1nbqkbnr/1pppp1pp/8/p7/5K2/8/PPPPPPPP/RNBQ1BNR]


12120 - Hauke Reddmann
Die Schwalbe, 204, Dec 2003

[8/8/8/8/8/8/8/RNBQKBNR]

8+0. Shortest series-proof-game with an 8-fold cyclical permutation of the pieces? (i.e. Piece 1 is on the begin square of piece 2, ...., piece 8 is on the begin square of piece 1)

[8/8/8/8/8/8/8/RNBQKBNR]