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Probleemblad

May 2003

R200 - Mario Parrinello

Probleemblad, May 2003

1. a4 d6 2. Ra3 Bg4 3. Rc3 Bxe2 4. Rxc7 Bc4 5. Qh5 e5 6. Qxh7 f5 7. Qxf5 Rh3 8. Be2 Rg3 9. hxg3 Qf6 10. Rh7 Ne7 11. Nh3 Bg8 12. c4 Kf7 13. Bh5#

Triple pin-mate


R201 - Reto Aschwanden & Michel Caillaud

Probleemblad, May 2003

1. b4 a6 2. b5 axb5 3. f4 Ra6 4. f5 Rh6 5. f6 d6 6. fxe7 Be6 7. exf8=N Ne7 8. g4 Nc8 9. g5 Ke7 10. g6 Qxf8 11. gxf7 g5 12. e4 Qg7 13. e5 Rd8 14. f8=N Bg8 15. e6 Kf6 16. e7 Nd7 17. e8=Q Nxf8 18. Qc6 Rd7 19. Qa6 bxa6

Two Schnoebelen-knights on f8, and a CF queen!


R202 - Paul Raican

Probleemblad, May 2003

1. e4 f5 2. Qf3 fxe4 3. Qxf8+ Kg6 4. d4 Qxf8 5. Bd3 Qxf2+ 6. Kxe4 Nf6+ 7. Kxf2+ Ke8 8. Ke1

Switchback by both kings


R203 - Henryk Grudzinsky

Probleemblad, May 2003

1. a4 b5 2. Ra3 bxa4[+Pa2] 3. Rb3 a3 4. Rxb8 axb2 5. Bxb2[+Pb7] e5 6. Ba3 Qf6 7. Be7 e4 8. Bd8 Qb2 9. Nc3 Ba3 10. Nxe4[+Pe7]

Switchback of three pawns.


R204 - A. Frolkin, A. Kornilov, H. Juel

Probleemblad, May 2003

Last three moves: -1...Qh7-h8 -2. a3xRb4! a7xNb6! and further -3. Nc4-b6 Rb3-b4 -4. Nd2-c4 Rd3-b3 -5. Ne4-d2 Rd1-d3 -6. Ng3-e4 Rf1-d1 -7. Bh2-g1 Rh1-f1 -8. Bg1-h2 Rh2-h1 -9. Nf1-g3 Rg2-h2 -10. Ne3-f1 Rg4-g2 -11. Qh4-h5 Rg5-g4 -12. Ng4-e3 Rh5-g5 -13. a2-a3 Rg5xNh5 -14. Ng7-h5 Qh8-h7 -15. Bh7-g8 Qf8-h8 -16. Bg8-h7 h7-h6 -17. Ne8-g7 Qh6-f8 -18. Kg7-f6 Qh5-h6 etc.

So there are at least 4 switchbacks: Qh8-h7-h8, Bg1-h2-g1, Rg5xNh5-g5, Bg8-h7-g8.


R205 - Klaus Wenda

Probleemblad, May 2003

Dedicated to Dirk Borst for his 40th birthday

-1. Kd2xBe3 Rf8-f2 -2. Kc3-d2 Rh8-f8 -3. Kc4-c3 Nc8-d6 -4. Kd3-c4 Ra8xXb8[Rh8] -5. b7-b8=X and 1. bc8=B[Bf1]#

Dual if the uncaptured piece on the 4th black move is a queen: -4... Ra8xQb8[Rh8] -5. Qb7-b8 & 1. Qh1#. As a correction, the author adds a black pawn on c6.