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Probleemblad

Jan-Mar 2008

R327c - Unto Heinonen

Probleemblad, Jan-Mar 2008

[1n2k1nr/1ppb1pp1/4p2r/3p4/3b4/8/1PPPPPPP/q3K3]

8+14. Proof game in 21.0 moves

[1n2k1nr/1ppb1pp1/4p2r/3p4/3b4/8/1PPPPPPP/q3K3]

Solution

1. Nf3 a5 2. Nd4 a4 3. Nb3 axb3 4. Nc3 bxa2 5. Rb1 axb1=R 6. Ne4 Rxc1 7. Ng5 Rca1 8. Nxh7 R1a6 9. Qa1 Rh6 10. Kd1 e6 11. Kc1 Bc5 12. Kb1 Ba7 13. Ka2 Bd4+ 14. Kb3 Rxa1 15. Ng5 Rxf1 16. Ka2 Ra1+ 17. Rxa1 Qxg5 18. Kb1 Qa5 19. Kc1 d5 20. Kd1 Bd7 21. Ke1 Qxa1#

Black clears the first row through one door.


R331 - Eyjolfur Eyjolfsson

Probleemblad, Jan-Mar 2008

[rnbqk2r/pppp2pp/3b1p2/4pB2/8/8/PPPP1PPP/RNB1K1NR]

14+15. Proof game in 5.5 moves (2 solutions, C+)

[rnbqk2r/pppp2pp/3b1p2/4pB2/8/8/PPPP1PPP/RNB1K1NR]

Solution

I) 1. e4 e5 2. Qf3 Bd6 3. Qf6 Nxf6 4. Bd3 Nxe4 5. Bxe4 f6 6. Bf5

II) 1. e4 f6 2. e5 fxe5 3. Qf3 Nf6 4. Qxf6 exf6 5. Bd3 Bd6 6. Bf5

Reciprocal captures


R332 - Gianni Donati

Probleemblad, Jan-Mar 2008

[1nbqk1n1/1pRp1pp1/RK1pp3/pB4p1/2P5/b1N1PPP1/PPP3P1/6N1]

14+14. Proof game in 19.5 moves (C+)

[1nbqk1n1/1pRp1pp1/RK1pp3/pB4p1/2P5/b1N1PPP1/PPP3P1/6N1]

Solution

1. f3 a5 2. Kf2 Ra6 3. Ke3 Rc6 4. Kd4 Rc3 5. dxc3 h6 6. Bg5 hxg5 7. e3 Rh3 8. Bb5 Rg3 9. hxg3 Nf6 10. Rh6 Nd5 11. Ra6 e6 12. c4 Ba3 13. Nc3 Nb4 14. Kc5 Qf6 15. Qd6 cxd6+ 16. Kb6 N4c6 17. Rd1 Ne7 18. Rd5 Ng8 19. Rc5 Qd8+ 20. Rc7

Rundlauf for shielding, switchback.


R333 - Michel Caillaud

Probleemblad, Jan-Mar 2008

[4k1nr/pppnppQ1/2pq1p2/8/2B3K1/1P3P2/b1PPPP2/RN4NR]

13+13. Proof game in 23.0 moves (C+)

[4k1nr/pppnppQ1/2pq1p2/8/2B3K1/1P3P2/b1PPPP2/RN4NR]

Solution

1. h4 h5 2. Rh3 Rh6 3. Rc3 Rf6 4. Rc6 Rf3 5. gxf3 dxc6 6. Bh3 Be6 7. Kf1 Bxa2 8. b3 Qd6 9. Bb2 Nd7 10. Bf6 gxf6 11. Be6 Bh6 12. Bc4 Bg5 13. hxg5 h4 14. g6 h3 15. g7 h2 16. Kg2 h1=R 17. Qf1 Rh8 18. gxh8=R O-O-O 19. Rh1 Nh6 20. Kh3 Rh8 21. Qg2 Kd8 22. Qg7 Ng8+ 23. Kg4 Ke8

Pronkin rook captured by a Pronkin rook, 4 rooks occupy h8, switchbacks.


R334 - Unto Heinonen

Probleemblad, Jan-Mar 2008

[2kq4/q3qq1q/n2pb3/br3n2/1r2P3/1B1R4/QQPQ2QQ/R1BQK1N1]

14+13. Proof game in 39.5 moves

[2kq4/q3qq1q/n2pb3/br3n2/1r2P3/1B1R4/QQPQ2QQ/R1BQK1N1]

Solution

 

1. a4 e5 2. a5 e4 3. a6 e3 4. axb7 a5 5. h4 a4 6. h5 a3 7. h6 Ra4 8. hxg7 Na6 9. b8=Q a2 10. Qb3 axb1=Q 11. Qa2 h5 12. b4 h4 13. b5 Bb4 14. b6 Ba5 15. b7 Qb6 16. b8=Q Qa7 17. Qbb2 Rb4 18. d4 exf2+ 19. Kd2 Rh5 20. e4 Rhb5 21. Bc4 f1=Q 22. Rh3 Qff6 23. Rd3 h3 24. d5 h2 25. d6 h1=Q 26. dxc7 d6 27. Bb3 Be6 28. c8=Q Qh7 29. Qcc3 Nh6 30. g8=Q+ Kd7 31. Qg3 Qfe7 32. Qh2 f5 33. g4 f4 34. g5 f3 35. g6 f2 36. g7 f1=Q 37. g8=Q Qff7 38. Ke1 Nf5 39. Qcd2 Kc8 40. Qgg2

Nine pawns return as a queen.


R335 - Ryan McCracken, Kevin Begley

Probleemblad, Jan-Mar 2008

[8/8/8/8/8/8/6k1/7b]

0+2. Add wK, bR, 5bP for an (1+8) illegal cluster

[8/8/8/8/8/8/6k1/7b]

Solution

[8/7p/7p/7p/7p/7p/6k1/4K1rb]

[8/7p/7p/7p/7p/7p/6k1/4K1rb]