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Die Schwalbe

No. 223, February 2007

13283 - Alexander Yarosh
Die Schwalbe 223, February 2007

[2Nnk2r/bQp2prb/1p4p1/8/3pp3/nP2P3/1q1P1PK1/8]

7+14. Add a white and a black pawn, then retract one white move for a #2

[2Nnk2r/bQp2prb/1p4p1/8/3pp3/nP2P3/1q1P1PK1/8]


13284 - Paul Raican
Die Schwalbe 223, February 2007

[rn5N/ppppnBp1/4pb2/4rpk1/P7/3K2Pq/1PPPP3/1NB3Nn]

12+15. Proof game in 23.5 moves

[rn5N/ppppnBp1/4pb2/4rpk1/P7/3K2Pq/1PPPP3/1NB3Nn]


13285 - Jorge Lois, Roberto Osario
Die Schwalbe 223, February 2007

[rn2qkbr/4pp1n/1p4p1/bp1p2p1/2PQP3/1P3N2/2PN1PP1/2BRRBK1]

14+15. Proof game in 26.5 moves

[rn2qkbr/4pp1n/1p4p1/bp1p2p1/2PQP3/1P3N2/2PN1PP1/2BRRBK1]

Editor's note: The problem was incorrectly published as "PG in 25.5 moves".


13286 - Alexander Yarosh
Die Schwalbe 223, February 2007

[8/pppppppp/8/8/1P6/8/P2P3P/8]

4+8. Add 9 pieces for an Illegal Cluster

[8/pppppppp/8/8/1P6/8/P2P3P/8]


13287 - Günther Weeth, Klaus Wenda
Die Schwalbe 223, February 2007

[2nr4/8/R7/8/8/kp1pp3/8/qrR1K3]

3+8. Retract 6 moves, then mate in 1 move, Proca retractor, Anticirce

[2nr4/8/R7/8/8/kp1pp3/8/qrR1K3]


13288 - Günther Weeth
Die Schwalbe 223, February 2007

[1N3N2/6p1/2b1PPqp/2p3p1/kPn5/P1bpK2P/P1p5/2r2n2]

9+13. Retract 21 moves, then mate in 1 move (Proca retractor, Anticirce)

[1N3N2/6p1/2b1PPqp/2p3p1/kPn5/P1bpK2P/P1p5/2r2n2]