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Probleemblad

Jul-Sep 2009

R352 - Unto Heinonen

Probleemblad, Jul-Sep 2009

[rn1qk1nr/p1pp3p/4p2B/6P1/5p2/2P2P2/3P1PP1/Rb2K1N1]

10+13. Shortest proof game in 12.0 moves (C+)

[rn1qk1nr/p1pp3p/4p2B/6P1/5p2/2P2P2/3P1PP1/Rb2K1N1]

Solution

1. h4 g5 2. hxg5 f5 3. Rh6 f4 4. Ra6 bxa6 5. c3 Bb7 6. Qa4 Bf3 7. exf3  e6 8. Bb5 axb5 9. b3 bxa4 10. Ba3 axb3 11. Bxf8 bxa2 12. Bh6 axb1=B

Pawn zigzag.


R353 - Michel Caillaud

Probleemblad, Jul-Sep 2009

[rn1qkn1r/ppp1pp1p/5p2/8/8/P1P1b2b/P2PPP2/RN2KBNR]

12+15. Shortest proof game in 17.0 moves (C+)

[rn1qkn1r/ppp1pp1p/5p2/8/8/P1P1b2b/P2PPP2/RN2KBNR]

Solution

1. g4 d5 2. g5 Qd6 3. g6 Qa3 4. bxa3 Nf6 5. Bb2 Nfd7 6. Bf6 gxf6 7. g7 d4 8. g8=Q d3 9. Qg4 Bh6 10. c3 Be3 11. Qc2 dxc2 12. Qa4 c1=Q+ 13. Qd1 Qc2 14. h3 Qd3 15. Qb3 Nf8 16. Qd5 Bxh3 17. Qd8+ Qxd8

Queen Pronkin captures queen Pronkin


R354 - Silvio Baier

Probleemblad, Jul-Sep 2009

[8/p4ppq/nb1pk1n1/p1p2pp1/3P4/3b1rr1/P1P2PP1/RNBQKBNR]

13+16. Shortest proof game in 24.5 moves (C+)

[8/p4ppq/nb1pk1n1/p1p2pp1/3P4/3b1rr1/P1P2PP1/RNBQKBNR]

Solution

1. d4 h6 2. Bg5 hxg5 3. e4 Rh3 4. Ba6 Rg3 5. h4 bxa6 6. h5 a5 7. h6 Na6 8. h7 Rb8 9. Rh6 Rbb3 10. Rf6 Rbf3 11. b4 exf6 12. b5 Bc5 13. b6 Ne7 14. b7 Bb6 15. b8=B c5 16. Bf4 d6 17. e5 Bf5 18. e6 Ng6 19. e7 Kd7 20. e8=B+ Ke6 21. Bb5 Qg8 22. Bf1 Bd3 23. h8=R f5 24. Rh1 Qh7 25. Bc1

RBB Pronkin


R355 - Silvio Baier

Probleemblad, Jul-Sep 2009

[rnbqkbnr/p1p2pp1/2P2RR1/2Qp4/6P1/P1BPNP1N/P3KPP1/1B6]

16+13. Shortest proof game in 25.0 moves (C+)

[rnbqkbnr/p1p2pp1/2P2RR1/2Qp4/6P1/P1BPNP1N/P3KPP1/1B6]

Solution

1. Nc3 e5 2. Rb1 Ba3 3. bxa3 d5 4. Rb6 Bg4 5. Rf6 b5 6. h3 b4 7. hxg4 b3 8. Rhh6 b2 9. Rhg6 b1=B 10. Bb2 h5 11. Qc1 h4 12. Nd1 h3 13. c4 h2 14. c5 Rh3 15. c6 Rf3 16. exf3 Bf5 17. Bd3 e4 18. Bb1 e3 19. d3 e2 20. Kd2 e1=B+ 21. Ke2 Bb4 22. Ne3 Bf8 23. Qc5 h1=R 24. Bc3 Rh8 25. Nh3 Bc8

rbb Pronkin


R356 - Harry Goldsteen

Probleemblad, Jul-Sep 2009

[8/8/7p/PP1P4/kr1rP3/BbKpRP2/N2PppP1/qNqRbB2]

14+11. Mate?

[8/8/7p/PP1P4/kr1rP3/BbKpRP2/N2PppP1/qNqRbB2]

Solution

Try: -1. b2xQc1=Q? -2. Qc2-c1 h7-h6 -3. Sc1-a2 Bc4-b3 -4. Sb3-c1 Qa2-a1 -5. Rc1-d1 Qa1-a2 -6. Qd1-c2 Qa2-a1 -7. Rc2-c1 Qa1-a2 -8. Qc1-d1 Qa2-a1 -9. Sa1-b3 b3-b2 -10. Bb2-a3 and the black king can't go back.

Solution: Start from the following position:

[8/1p5p/8/PPKPN3/2brP3/rp1pRP2/k1pPppP1/NRBRbB2]

8/1p5p/8/PPKPN3/2brP3/rp1pRP2/k1pPppP1/NRBRbB2 (15+12)

1. Kb4 Ra4+ 2. Kc3 Rb4 3. Rb2+ Ka3 4. Rb1+ Ka4 5. Ba3 b6 6. Rb2 c1=Q+ 7. Rc2 Qb1 8. Nd7 Qa2 9. Bc1 Qb1 10. Rb2 Qa2 11. Nxb6+ Ka3 12. Nd7 Qb1 13. Nb8 Qa2 14. Nc6 Ra4 15. Nb4 Qb1 16. Na2 Rb4 17. Rc2+ Ka4 18. Bb2 Qc1 19. Ba3 Qb1 20. Rb2 Qc1+ 21. Nc2 Qa1 22. Nc1 Qa2 23. Rb1 Qa1+ 24. Bb2 Qa2 25. Ba1 Qa3 26. Rb2 Qa2 27. Na3 Qb1 28. Rc2 Qa2 29. Bb2 Qa1 30. Nb1 Qa2 31. Ba3 b2 32. Nb3 h6 33. Nc1 Qa1 34. Na2 Bb3 35. Rcc1 bxc1=Q#


R357 - Wolfgang Dittmann

Probleemblad, Jul-Sep 2009

[kN1n4/ppB5/1pP5/1P6/p6p/1P3K1P/5PP1/n5b1]

9+9. -9 & #1 (Proca retractor, Anticirce)

[kN1n4/ppB5/1pP5/1P6/p6p/1P3K1P/5PP1/n5b1]

Solution

Try: -1. Sa6-b8? [Thr: -2. Bb8-c7 and 1. Sc7#] a3xXb2! and b7 is unguarded. This defence is removed by forcing the retraction of g2-g1=B, rendering this uncapture impossible due to capture balance.

Try: -1. Kg3-f3? h5-h4 -2. f5xg6ep g7-g5 -3. Kh2-g3 g2-g1=B and now Pf5 is in the way of e5xf6ep, and after -4. e5xPf6 Sc2-a1! -5. Sa6-b8 Sa3-c2 the rebirth square of the white knight is guarded by the black knight.

Solution: -1. e5xf6ep! f7-f5 -2. Kf2-f3 Bh2-g1 -3. f5xg6ep g7-g5 -4. Kg3-f2 Bg1-h2 -5. Bf2-g3 Bh2-g1 -6. Kg3-f2 Bg1-h2 -7. Kf2-g3 g2-g1=B -8. Sa6-b8 (a3xXb2 is now illegal due to capture balance) ~ -9. Bb8-c7 and 1. Sc7#