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Die Schwalbe

No. 205, Feb 2004

12174 - Dmitri Baibikov
Die Schwalbe, No. 205, Feb 2004

[kQQQ4/1p3ppp/QRpp4/BP6/1p2Q3/1Q6/3K4/Qq3Q2]

12+9. Which queens are promoted? (8 Wh. Queens)

[kQQQ4/1p3ppp/QRpp4/BP6/1p2Q3/1Q6/3K4/Qq3Q2]


12175 - Alexander Yarosh
Die Schwalbe, No. 205, Feb 2004
(after Rol & Goldsteen)

[8/8/2p5/PPPP4/kr1rPp2/pnK1rP2/BpbQRpp1/NRq1b3]

12+14. Release the position (3 Bl. Rooks)

[8/8/2p5/PPPP4/kr1rPp2/pnK1rP2/BpbQRpp1/NRq1b3]


12176 - Günther Weeth & Werner Keym
Die Schwalbe, No. 205, Feb 2004

[r4k2/pppp2p1/8/8/8/5P1P/1PPPPpP1/1KB2BR1]

11+8. Retract 3 half-moves (2 white and 1 black). Can white reach a position in which black can't castle anymore? (Proca retractor) a) Diagram b) Pf2->d6 c) Pf2->g5 d) Pf2->h6

[r4k2/pppp2p1/8/8/8/5P1P/1PPPPpP1/1KB2BR1]


12177 - Gligor Denkovski
Die Schwalbe, No. 205, Feb 2004

[rnbkqbnr/pppp1ppp/4p3/8/7N/3PPN2/PPP2P1P/2BKQB1R]

14+16. Shortest proof game in 11.0 moves

[rnbkqbnr/pppp1ppp/4p3/8/7N/3PPN2/PPP2P1P/2BKQB1R]


12178 - Roberto Osorio
Die Schwalbe, No. 205, Feb 2004

[rnbqkbnr/ppppppp1/7B/8/6Q1/1B1PP1KP/PPP2N1R/RN6]

14+15. Proof game in exactly 13.0 moves

[rnbqkbnr/ppppppp1/7B/8/6Q1/1B1PP1KP/PPP2N1R/RN6]


12179 - Jorge Lois
Die Schwalbe, No. 205, Feb 2004

[8/2p1p3/rnbqkbnr/8/4P1P1/5P2/PPP4P/RNB1K3]

11+10. Shortest proof game in 16.0 moves

[8/2p1p3/rnbqkbnr/8/4P1P1/5P2/PPP4P/RNB1K3]


12180 - Gerd Wilts & Reto Aschwanden
Die Schwalbe, No. 205, Feb 2004

[r2qkb1r/2ppp2p/n4n2/5p2/8/n3BP1K/1PPPPP1P/R2r2NR]

12+14. Shortest proof game in 18.0 moves (3 Bl. Knights, 3 Bl. Rooks)

[r2qkb1r/2ppp2p/n4n2/5p2/8/n3BP1K/1PPPPP1P/R2r2NR]


12181 - Christoph Fieberg
Die Schwalbe, No. 205, Feb 2004

[3Q1bnn/p1p1prpq/R1p2kbr/5p1p/2B2B1R/Pp6/1P3PPP/1K3NNR]

14+16. Shortest proof game in 22.5 moves (3 Wh. Rooks)

[3Q1bnn/p1p1prpq/R1p2kbr/5p1p/2B2B1R/Pp6/1P3PPP/1K3NNR]


12182 - Paul Raican
Die Schwalbe, No. 205, Feb 2004
This problem was later found to be cooked by Ryan McCracken

[rnbqkbnR/pPp1p3/Pr6/P3B1R1/P4P2/K7/1B4B1/1N6]

12+11. Shortest proof game in 28.5 moves (3 Wh. Bishops)

[rnbqkbnR/pPp1p3/Pr6/P3B1R1/P4P2/K7/1B4B1/1N6]


12183 - Klaus Wenda
Die Schwalbe, No. 205, Feb 2004

[1q2b3/8/8/8/8/4n3/p5np/1k2K1N1]

2+7. Retract 5 half-moves for a mate in one (Proca retractor, AntiCirce)

[1q2b3/8/8/8/8/4n3/p5np/1k2K1N1]


12184 - Henryk Grudzinski
Die Schwalbe, No. 205, Feb 2004

[rnq3Br/2pBk3/B7/1b4b1/2b1bb2/3Pb3/PPPnbPPP/RNbQKbNR]

16+16. Shortest proof game in 13.0 moves (3 Wh. Bishops, 9 Bl. Bishops) (CousCousCirce)

[rnq3Br/2pBk3/B7/1b4b1/2b1bb2/3Pb3/PPPnbPPP/RNbQKbNR]

CousCousCirce: A captured unit is reborn on the rebirth square of the capturing unit. If a pawn captures and promotes, the piece is reborn on the rebirth square of the promoted piece. If a pawn is reborn on the promotion rank, it's promoted. If the rebirth square is occupied, the piece is removed from the board. Example game: 1. e4 h5 2. Qh5[+bPd1=bB] Rh5[-]


11719v - Frolkin & Kornilov
Die Schwalbe, No. 205, Feb 2004

[3b2B1/2pRRP1q/3ppKpk/p4p1p/4P3/P7/1PP2PPP/2B5]

13+10. Where were the black knights captured?

Intention: 1. e3-e4 a6-a5 2. Bd2xSc1 ... 5. Re8-e7 Se7-c6 6. Rf8xSe8! Sg7-e8 7. Re8-f8 Qh8-h7 8. Rf8xe8 h7xQ,Sg6 9. Qg3-g6/Sh4-g6 a7-a6 10. g6xSf7! etc.

[3b2B1/2pRRP1q/3ppKpk/p4p1p/4P3/P7/1PP2PPP/2B5]


11791v - A. Yarosh
Die Schwalbe, No. 205, Feb 2004

Pd4->d2, Qf4->d4, Release the position


11792v - A. Yarosh
Die Schwalbe, No. 205, Feb 2004

+wPg2


11857v - S. Orce
Die Schwalbe, No. 205, Feb 2004

Ng1->h1