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Probleemblad

February 2004

R225 - Tom Volet

Probleemblad, Feb 2004

Black misses 3 pieces, including Bf8 which was captured at home. The white captures must've been Pd2xRe3 and Pf5xBg6. The white pawn on c7 is the original c-pawn, so black captured b7xc6, and the black c-pawn captured twice to promote to a bishop. Further captures are f7xe6 and h7xg6. The white h-rook never left its corner. This accounts for all missing white pieces.

Last 18 moves were: -1. .. Kb4-a5 -2. a5-a6 Kc3-b4 -3. a4-a5 Kd2-c3 -4. a3-a4 Ke1-d2 -5. d2xRe3 Rf3-e3 -6. a2-a3 Rf7-f3 -7. f5xBg6 Kf2-e1 -8. f4-f5 Kg1-f2 -9. f3-f2 Kf2xRg1 -10. Rh1-g1.

Uncapture of both screened and screening unit, with last 18 moves determined (Author)


R226 - Gerd Wilts

Probleemblad, Feb 2004

a) 1. f4 Na6 2. f5 Rb8 3. f6 Nxf6 4. e4 Nxe4 5. Bc4 Nxd2 6. Ne2 Ne4 7. Qd4 f6 8. Nd2 b) 1. f4 Na6 2. f5 Rb8 3. f6 Nxf6 4. e4 Nxe4 5. d4 f6 6. Bd3 Kf7 7. Ne2 Ke6 8. d5+ Kxd5 9. Bb5+ Ke5 10. Qd4+ Ke6 11. Nd2 Kf7 12. Bc4+ Ke8

Difference of 4.5 moves between the two solutions.


R227 - Joost de Heer

Probleemblad, Feb 2004

R227 - De Heer 1. h4 d5 2. h5 Nd7 3. h6 Ndf6 4. hxg7 h5 5. g4 h4 6. g5 Rh5 7. g6 Nh6 8. g8=Q Nh7 9. g7 f6 10. Qe6 c5 11. Qb6 axb6 12. g8=Q Ra3 13. Qe6 Rh3 14. Qc6+ bxc6 15. d3 Be6 16. Qd2 Kd7 17. Qg5 Qe8 18. Qg8 Bxg8 Two CF-queens and one original queen on g8.


R228 - Rustam Ubaidullaev

Probleemblad, Feb 2004

1. Nc3 f6 2. Nd5 Kf7 3. c3 Ke6 4. Qa4 Ke5 5. b3 e6 6. Bb2 Bb4 7. O-O-O d6 8. Qe8 c6 9. Kc2 Qa5 10. Kd3 b6 11. Ke3 Ba6 12. Kf3 Bc4 13. Kg4 Nh6+ 14. Kh5 Ng4 15. Ba1 h6 16. Kg6 a6 17. Kf7 g6 18. Ke7 Ra7+ 19. Kd8 Rg7 20. Kc8 Nd7 21. Kb7 Rhh7 22. Ka8

All black pawns make a single move in a capture-free game.


R229 - Reto Aschwanden

Probleemblad, Feb 2004

1. a4 f5 2. Ra3 f4 3. Rh3 f3 4. Rh4 fxg2 5. Nh3 g1=Q 6. f4 Qb6 7. Nc3 Qxb2 8. Bxb2 g5 9. Qb1 g4 10. Nd1 g3 11. Be5 g2 12. c3 g1=N 13. Qxh7 Nf3+ 14. exf3 Nc6 15. Bd3 Nd4 16. O-O Ne2+ 17. Kh1 Ng1 18. Rxg1 c6 19. Rxg8 Qb6 20. Bg6+ Kd8 21. d3 Qg1+ 22. Nxg1

Black CF-queen, anti-Pronkin queen, CF-knight and anti-Pronkin knight, all on g1.


R230 - Roberto Osorio, Jorge Lois, Oscar Cuasnicú

Probleemblad, Feb 2004

1. g3 Na6 2. Bg2 Rb8 3. Bc6 bxc6 4. Nf3 Rb3 5. O-O Ra3 6. bxa3 e6 7. Bb2 Be7 8. Bd4 Bh4 9. Nc3 Qg5 10. Rb1 Ne7 11. Rb8 O-O 12. Qb1 Bb7 13. Re8 Ng6 14. Re7 Ra8 15. Re8+ Nf8 16. Rd8 Bc8 17. Qb7 Qb5 18. Ra1 Qb1+ 19. Ne1 Qd1 20. Nb1 Nb8 21. Bb2 a6 22. Bc1

Switchbacks to allow pieces to penetrate.


R231 - Jorge Lois

Probleemblad, Feb 2004

1. d4 Nc6 2. Bh6 Ne5 3. Qc1 Nh6 4. Qh6[Nb8] Nf3 5. ef3[Ng8] gh6[Qd1] Not a shortest proofgame (it's possible to reach the position in 4.5), but in 5.0 it's unique with a knight swap.


R232 - Wolfgang Dittmann

Probleemblad, Feb 2004

1. f2xQg3[g2] Bg4-h3 -2. Ke1-f1 d3-d2 -3. e2xNf3[f2] Qb8-g3 -4. d2xRe3[e2] Bh8-a1 -5. c5xd6ep[d2] d7-d5 -6. Ka5xBb4[Ke1] Qf8-b8 -7. c4-c5 and 1. cb5[b2]# 'Alluncapture', the distant Pg2 delivers mate.


R233 - Klaus Wenda

Probleemblad, Feb 2004

-1. Kf2xPg3[Ke1] g4-g3 -2. f7-f8=N Bb8-a7 -3. Kg2-f2 Rh1-g1 -4. c7-c8=N Nc8-e7 [f2-f1=B? illegal because of Pf7!] -5. f5xe6ep and 1. cb8=B[Bc1]#