Friday, 1 June 2018

Study 150

Árpád Rusz
Jirtdan Ty
2018
Special Commendation

White wins

1. d4 Nf3 1... Ne2 2. d5 Nc3 3. d6! Nxa4 4. d7 +- 2. d5 Ne5 2... Nd4 3. Kf6 +- 3. d6 3. Ke6? Nc4 = 3... Kg5 In order to win, white has to reach the same position but with black to move.


cyclic zugzwang - WTM

4. Ke6 Nd3 5. Bb5 5. d7? Nc5+ =; 5. Bc2? Nc5+ 6. Kd5 Nd7 = 5... Nf4+ 6. Kf7! Thematic try: It is too early for 6. Kd7?! (Position X') 6... Ng6 7. Bd3? Ne5+ 8. Ke6 Nxd3 9. d7 Nc5+ = 6... Ng6 7. Ba4! 7. d7? Ne5+ =; 7. Bc6? Ne5+ = 7... Ne5+ 7... Kf5 8. Bc2+ +- 8. Ke7! White has managed to transfer the move to black. While the white king made a triangle manoeuvre (Ke7-e6-f7-e7, 3 moves) and the bishop a switchback (Ba4-b5-a4, 2 moves), the black knight walked on a diamond-shaped path (Ne5-d3-f4-g6-e5, 4 moves). These manoeuvres result in a tempo loss by white.


cyclic zugzwang - BTM

8... Ng6+ 8... Kf4 9. Kf6! (9. Ke6? Nd3 positional draw 10. Kd5 Ne5 11. Ke6 Nd3 positional draw) 9... Ke4 10. Ke6 Nd3 11. Bc2 +- pin 9. Ke6 Nf4+

10. Kd7! (Position X) 10... Kf6 10... Ng6 11. Bc2 Ne5+ 12. Ke6 +- Now d3 is not available for the knight. Please, compare it with the thematic try. 11. Kc8! Nd5 12. Bb3! 12. d7? Nb6+ = 12... Ke5! 12... Ke6 13. d7+- pin 13. Kd7! Switchback 13... Nf6+ 14. Ke7 Kf5 15. Ba2(c4,f7) tempo 15... Ke5 16. Be6 +-

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Related study: Study 73

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