Wednesday, 18 October 2017

Study 129

Michael Byrne & Árpád Rusz
Shakhmatnaya Kompozitsia
2017

White wins

1. Ka5! 1. Kb5? Bd3+! 2. Rxd3 Rxc1 = 1... Bc2! 2. Bxa3! 2. Rxa1+? Kxa1 3. Bxa3 b2 = 2... Kxa3 3. R1xc2! 3. Rxa1+? Kb2 = fork

Main 1:
3... Ra2 4. Rc1 Rg2!


5. Rf3!!

Thematic try: 5. Rh3? Rg5+ 6. Kb6 Rg6+ 7. Kb5 Rg5+ 8. Kc4 Ka2 9. Kb4 Rg4+ 10. Kc3 b2 11. Rc2 Ka1! 12. Rxb2 Rg3+! 13. Rxg3 stalemate 5... Rg5+ 6. Kb6 Rg6+ 7. Kb5 Rg5+ 8. Kc4 Ka2 9. Kb4 Rg4+ 10. Kc3 b2 11. Rc2 Ka1 12. Rxb2 +-

Main 2:
3... Rh1


4. Rf2!!

Thematic try: 4. Rg2? Rh3 5. Rc4 Rh5+ 6. Ka6 Rh3/Rh6(8) 7. Kb5 Rh5+ 8. Kc6 Rh6+ 9. Kd5 Rh5+ 10. Ke6 Rh6+ 11. Kf5 Rh5+ 12. Kg6 (12. Kf6 Rh6+ 13. Kg5 Rh8! 14. Kf6 Rh6+ positional draw) 12... Rb5 13. Rg3 Ka2 14.Ra4+ Kb1 15. Rg1+ Kb2 16. Kf6 Rc5 17. Ke6 Rc1 18. Rg3 Rc3 19. Rg8 Kb1 20. Ra3 Kb2 21. Rga8 Kc2 = Position X'. The white king is too far to help.

4... Rh3! 5. Rc4 5. Rxh3? stalemate 5... Rh5+ 6. Ka6! 6. Kb6? b2 7. Rf3+ Ka2 8. Ra4+ Kb1 9. Rf1+ Kc2 10. Rb4 Kc3 = 6... Rh3 6... b2 7. Rf3+ Ka2 8. Ra4+ Kb1 9. Rf1+ Kc2 10. Rb4 Kc3 11. Rb8 +- 7. Kb5 Rh5+ 8. Kc6 Rh6+ 9. Kd5/Kc(d)7 9... Rh5+ 10. Kd(e)6 10... Rh6+ 11. Ke5(7) 11... Rh5+ 12. Kf6 Rh8! 13. Kf7! 13. Kg7? Rb8 = 13... Rh7+ 14. Kg6 Rb7 15. Rf3 Ka2 16. Ra4+ Kb1 17. Rf1+ Kb2! 17... Kc2 18. Rc4+ Kd3 19. Rcc1 b2 20. Rfd1+! Ke2 21. Rb1 +- 18. Kf6! Rc7 19. Ke5! In contrast to the thematic try, there was no rook protecting the fifth rank. 19... Rc1 20. Rf3 Rc3 21. Rf8! White doesn't allow a black counterplay based on Rc8. 21... Kb1 22. Ra3! The only way to stop the pawn is by pinning. 22... Kb2 23. Rfa8 23. Kd4? Rh3! 24. Ra7 Rh4+ 25. Ke5 Rh5+ 26. Kf4 Kb1! Black uses the poor position of the f8 rook which is obstructed by its own king. 27. Rb8 b2 = 23... Kc2 Position X. Now the white king is closer compared to Position X' reached in the thematic try.


Position X


Position X'

24. Kd4! Rd3+ 25. Ke4! White leaves the c-file open for a rook check. 25. Kc4? b2 26. Rxd3 b1=Q = 25... Rc3 26. Rg(h)8 Kb2 26... b2 27. Rg2+ Kd1 28. Rxc3 b1=Q+ 29. Rd3+ Ke1 30. Rg1+ +- 27. Kd4! Rc2! Although the best square for the black rook is c1, black deliberately wastes a tempo before putting it there trying to play for a zugzwang. 28. Rga8 28. Ra4? Kb1 29. Rc4 b2 = Now we see the reason for moving the black rook to c2 instead of c7. With an unprotected rook, this pawn move wouldn't be possible. 28... Rc1 The threat 29.Ra1 had to be stopped. Now white seems to be in zugzwang but it still can win by transferring the move to black.


cyclic zugzwang - WTM

29. R3a4(5,6,7) White threatens to put a rook to the b-file. Beside occupying the first rank, this is white's other plan to win. 29... Kb1! Black aims for a fortress by trying to push the pawn. 30. Ra1+ 30. Rb7? b2 = fortress 30... Kb2 31. R1a3!


cyclic zugzwang - BTM

31... Rh1 Black has to keep the rook on the first rank. 32. R3a5(6,7) 32... Kb1 This is the last try to build the fortress. Now that the black rook has moved from c1, this move loses immediately. 33. Ra1+ +-

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Saturday, 14 October 2017

Study 128a

A. Stavrietsky
Babich-Olimpiev MT
2017
1st Prize

Draw

1. Nd5 1. Qxh6+? Rh7 -+ 1... Rc4+ 2. Kb1 2. Kb2? Rxe4 3. Nxe7 Rf2+ 4. Kb1 Bxh5 -+ 2... Rc1+! 3. Kb2 3. Kxc1? Qa3+ -+ 3... Rf2+ 4. Nxf2 Rb1+! 5. Kxb1 Qh7+ 6. g6! 6. Kb2? Bxh5 7. Bxe5+ Ng7 8. Ne7 hxg5 -+ 6... Bxg6+ 7. Bc2!! bxc2+ 8. Kc1 Bxh5 9. Bxe5+ Ng7 10. Ne7! Bg4! 11. h4 11. Bf4? Bh3! 12. Be5 h5 13. Bf4 h4 -+ 11... h5 12. Bf4 Ne8 13. Be5+ Ng7 14. Bf4 Bd7 15. Bd2! 15. Bg5? Ne8 -+ 15... Ne6 16. Bc3+ Ng7 17. Bd2 Ba4 18. Bf4! positional draw

Related study: Study 128

Study 128

Árpád Rusz
Internet (Didukh's Blog)
2017

Draw

1. Nd5+ Ng7 2. Ne7! h4 3. Bc3! Thematic try: 3. Be5? h5 4. Bf4 Be4 5.Nd7 Bb1! Bristol Theme 6. b7 Qc2# 3... h5 4. Bd2 Be4! 4... Nf5 5. Bc3+ Ng7 6. Bd2 Bb7 7. Kb2! Nf5 8. Bc3+ Ng7 9. Bd2 positional draw

5. Nd3!! 5. Bf4? Bb1! Bristol 6. b7 Qc2#; 5. Kb2? Bb1! Bristol 6. b7 Qc2+ 7. Ka1 Qa2# 5... Bc6! 6. Nf4! Unlike to the thematic try now the f4 square was empty! 6. Nc5? Ba4! 7. b7 Qc2# 6... Qe4 7. Nfg6+ Kh7 8. Nf8+ Kh8 9. Nfg6+ perpetual check

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An interesting feature of this study is that there are no captures in the solution not even in the variations. Compare to this related study: Study 128a

Sunday, 24 September 2017

Blockade 3

Y. Zemljanski
Leninska Smena
1964
1st Prize

Draw

1. Bg6+ Kh8 2. Nh6 Qf4 (2... Qd8+ 3. Ke2 =) 3. Nf7+ Kg8 4. Nh6+! Qxh6 (4... Kh8 5. Nf7+ perpetual check) 5. Bc1 Qh8 6. Bb2! Kf8 7. Ba3+ Kg8 8. Bb2 Qh6 9. Bc1 Qh8 10. Bb2 positional draw


blockade

Blockade 2

Shakhmaty v SSSR
D. Gurgenidze
1980
5th Prize

Draw

1. Nc3+ Ka1 (1... Kc2 2. Nd5 Rb3 3. Nd4+ Kb1 4. Nxb3 =) 2. Nd4 Re8+ 3. Kd5 Rd8+ 4. Ke4 Rxd4+


6th WCCT Theme

5. Ke3!! (5. Kxd4? f1=Q mutual zugzwang 6. Ke3 Qa6 -+) 5... f1=Q (5... Rf4 6. Bb2+! Kxb2 7. Nd1+ Kc1 8. Nxf2 =) 6. Kxd4 mutual zugzwang 6... Qa6 7. Bc1 Qf1 8. Ba3 positional draw


blockade

Breakthrough 1

P. Cathignol
Thèmes 64
1981
Commendation

White wins

1. d5! This is the only move that wins! 1...exd5 2. exd5 cxd5 3. a5 bxa5 4. b5 axb5 5. cxb5 Ke7 6. b6 Kd7 7. b7 (7. g5) 7... Kc7 8. g5 fxg5 9. h5 gxh5 10. f5 a4 11. f6 (11. b8=Q+) 11... a3 12. f7 a2 13. b8=Q+ Kxb8 14. f8=Q+ +-

Excelsior 5

O. Pervakov
Tidskrift for Schack
1993
2nd Honourable Mention - version

White wins

1. d3+! Kf1! 1... axb4 2. h7 +- 2. Kh2 Rxh6+ 3. Kg3 Ra6 4. Bb5! Rxa7 5. d4+ Kg1 6. Bc5! Ra8! 7. d5+ Kh1 8. Bc6! 8. d6? Be4! = 8... Ra6 9. d6+ 9. Bb7? Rd6! = 9... Rxc6 10. d7! Rxc5 11. d8=Q +-

Excelsior 4

M. Zinar
Olympic ty Sochy
2014
Special Honourable Mention

Draw

1... gxf6! 2. axb3! fxe5! 3. bxc4! (3. dxe5? cxb3 -+) 3... exd4! (3... dxc4 4. dxe5 Kd7 5. Kf3 Kc6 6. Ke4 Kc5 7. h4 =) 4. cxd5! (4. cxd4? dxc4 -+) 4... dxc3! (4... exd5 5. cxd4 =) 5. dxe6! cxb2! (5... fxe6 6. bxc3 =) 6. exf7! b1=Q 7. f8=Q+ =

Excelsior 3

J. Van Reek
Shakhmaty v SSSR
1969
Commendation

White wins

1. dxe3 fxe6 2. exd4 (2. fxe6? dxe3 =) 2... exf5 3. dxe5 fxe4 (3... dxe5 4. exf5 +-) 4. exd6 exf3 (4... exd6 5. fxe4 Kb6 6. Kg2 +-) 5. dxe7 fxe2 6. e8=Q +-

Excelsior 2

V. Korolkov
Thèmes 64
1959

White wins

1. Be7+ Kg3 2. Bxf8 Qxf8 3. gxh3+ Kh4 4. hxg4+ Kg5 5. gxh5+ Kh6 6. hxg6+ Kg7 7. gxh7+ Kh8 8. Rg8+ Qxg8 9. hxg8=Q+ Kxg8 10. Rb1! Nc7 11. Rb8+ Kf7 12. Rb7 +-

Excelsior 1

V. Korolkov
Problem
1958

White wins

1. bxc3+ Kc5 1... Kc4 2. Qb3+ +- 2. cxd4+ Kd6 2... Kxd4 3. Qb2+ Ke3 4. Qd2+ Kf3 5. Qd3+ +- 3. dxe5+ Ke7 3... fxe5 4. Qd3+ +- 4. exf6+ Kf8 5. fxg7+ Kg8 6. gxh8=Q+ Kxh8 7. Qb2+ Kg8 8. Qxe2 +-

Festina Lente 2

T. Gorgiev
Ceskoslovensky Sach
6th Honourable Mention
1930

Draw

1. c6! 1. a4? h6! 2. c6 h5 3. a5 h4 4. a6 h3 5. a7 h2 6. c7 h1=Q# 1... h6! 2. a3! h5 2... Kc7 3. a4 Kxc6 4. a5! Kb5 5. Kb7! Kxa5 6. Kc6 h5 7. Kd5= Réti manoeuvre 3. a4 h4 4. a5 h3 5. a6 h2 6. a7 h1=Q stalemate 6... h1=R 7. c7 Rh8 stalemate

Festina Lente 1

Otto Bláthy
The Chess Amateur
1922

White wins

1. Kxe1 Qa1 2. h3!! (2. h4? Qa2 3. h5 Qa1 4. h6 Qa2 5. h7 Qa1 6. h8=N Qa2 7. Nf7 Qa1 8. Nd8 Qa2 9. Ne6 Qa1 10. Nxc5 Qa2 11. Nd7 Qa1 12. Ne5 Qa2 13. Nxc4 Qa1 14. Na5 Qa2 =) 2... Qa2 3. h4 Qa1 4. h5 Qa2 5. h6 Qa1 6. h7 Qa2 7. h8=N! Qa1 8. Nf7 Qa2 9. Ne5 Qa1 10. Nd7 (10. Nxc4? Qa2 11. Na5 c4! 12. Nxc4 Qa1 13. Na5 Qa2 =) 10... Qa2 11. Nxc5 Qa1 12. Nd7 Qa2 13. Ne5 Qa1 14. Nxc4 Qa2 15. Na5 Qa1 16. Nxb3#

Saturday, 23 September 2017

Study 126a

R. Becker
Magyar Sakkvilág
2009

Draw

1. e4! 1. c4? g6! 2. e4 g5 3. c5! dxc5 4. e5 g4 5. e6 g3 6. e7 g2 7. e8=Q g1=Q 8. Qe6 a4 9. Qc4+ Kg2+ 10. Ka2 Qd4 -+ 1... g6! 1... Ke2 2. c4 Kd2 3. Kb2 g5 4. e5! dxe5 5. c5 = 2. c3! g5 3. c4 g4 4. c5 dxc5 5. e5 g3 6. e6 g2 7. e7 g1=Q 8. e8=Q Kf2+ 8... Qd4 9. Qb5+ Kf2 10. Qxa5 = 9. Kc2 Qh2 9... Qg5 10. Qa4 =; 9... Qg4 10. Qf8+ =; 9... Qg2 10. Qe5 = 10. Qe4 Qh5 11. Kd2 Qg5+ 12. Kd3 =

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Related study: Study 126

Friday, 22 September 2017

Asymmetry 7

P. Heuacker
Wiener Neueste Nachrichten
1927
- version by Rusz (2017) -

White wins

In Heuacker's original setup one of the pawns was white: wKe6,Qe7,Ph2/bKe3,Pb2,c2,d2,e2,f2,g2

1. Qa4+! Kd3 1... Ke3 2. Ke5 d1=Q (2... e1=Q 3. Qe4#; 2... f1=Q 3. Qd4+ Kf3 4. Qf4#) 3. Qf4+ Kd3 4. Qd4#; 1... Kf3 2. Kf5 e1=Q (2... f1=Q 3. Qf4#; 2... g1=Q 3. Qe4+ Kg3 4. Qg4#) 3. Qg4+ Ke3 4. Qe4# 2. Kd5 c1=Q 2... d1=Q 3. Qd4#; 2... e1=Q 3. Qc4+ Ke3 4. Qe4# 3. Qe4+ Kc3 4. Qc4#

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Wednesday, 20 September 2017

Study 127

Steffen Slumstrup Nielsen & Árpád Rusz & Martin Minski
Badalov-55 MT
2017
1st Honourable Mention

White wins

1. Qe6+ Rf7 2. a7 h1=Q 2... d4 3. Nd5 Qa4 4. Nf6+ Kf8 5. Qd6+ Re7 6. Nxh7+ Kg8 7. Qg6+ Kh8 8. Qf6+ Kg8 9. Qf8+ Kxh7 10. Qxe7+ Kxh6 11. Qe(f)6+ Kxh5 12. Qf5+ Kh4 13. Qxf4+ Kh3 14. Qf3+ Kh4 15. a8=Q +-; 2... Qb4 3. a8=Q c4 4. Qxf7+! Kxf7 5. Qxd5+ Kf6 6. Ne4+ +- 3. a8=Q d4!

4. Nd5!! Qe2! 5. Nf6+ 5. Qxe2? Qh3+ = 5... Kh8

6. Ne4!! Qh3! 7. Qxh3 Rf8+ 8. Kc7! Rxa8 9. Qe6! 9. Qf5? Ra7+ 10. Kb8 Ra8+! 11. Kc7 (11. Kxa8 Qa6+ 12. Kb8 Qb6+ =) 11... Ra7+ perpetual check 9... Qxh5 9... Ra7+ 10. Kb8 Ra8+ 11. Kxa8 +- 10. Qf6+ Kg8 11. Qg7#

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Monday, 18 September 2017

Study 126

Árpád Rusz
Malyshko-105 MT
2017
- after Richard Becker -

White wins

A few days after composing and publishing this study I have discovered a very serious anticipation in the HHdbV. In 2009 Richard Becker published the following draw study: Study 126a. Although it seems that he hasn't found the main line from my work, my study can be considered no more than a version of his. The judge of that 2009 tourney stated that he didn’t award studies that only contained technical play and “database works”. Probably this was the reason the whole community missed to notice the existence of that groundbreaking study.

Thematic try: 1. b4? f5 mutual zugzwang 2. b5 f4! 3. exf4 d4 mutual zugzwang 4. b6 d3 mutual zugzwang 5. b7 d2 mutual zugzwang 6. b8=Q d1=Q mutual zugzwang


mutual zugzwang

7. h5 7. Kc7+ Kf7! 8. Qb4 Qh5! = 7... Qxh5 8. Kd7+ Kh7! = 8... Kf7? 9. Qe8+ +-; 8... Kg7? 9. Qe5+ Qxe5 10. fxe5 +-


The real solution starts with an amazing waiting move:
1. b3!! mutual zugzwang. White is very polite: it voluntarily allows black to be the one who is promoting first! 1... f5 2. b4 mutual zugzwang


Bugs Bunny?

2... f4! 3. exf4 d4 4. b5 mutual zugzwang 4... d3 5. b6 mutual zugzwang 5... d2 6. b7 mutual zugzwang


mutual zugzwang (!!)

6... d1=Q 7. b8=Q mutual zugzwang 7... Qg4+ 7... Qh5 8. Kd7+ +-; 7... Qd3 8. h5 (8. Qe5? Qh3+ =) 8... Qf5+ 9. Kb7+ Kh7 10. Qe5 +- 8. Kc7+ Kh7 9. Qb1+ Kh6 9... Kg7 10. Qb2+ Kf7 11. Qb3+ Kg7 12. Qc3+ Kf7 13. Qc4+ Kg7 14. Qd4+ +- 10. Qb6+ Kh5 11. Qf6 Qxh4 12. Qxh4+ Kxh4 We are back to another pawn ending although this is much simpler than the initial position of the study. The black king seems to be much closer to the pawn but the chessboard's geometry can be deceiving.

13. Kd6 Kg4 14. Ke5 +-

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Saturday, 16 September 2017

Fortress 3

Surya Sekhar Ganguly‏
Internet (www.twitter.com)
2017
- correction by Rusz -

White wins

This position with a very cool fight against a fortress got the name "The Trojan Horse Puzzle". In the original both 1.Kd2 and Kb1 were equally good keys, so I have modified the position a bit to eliminate the dual.

1. Kd2! (1. Na2?! Kg7(8) 2. Nxb4? cxb4 =) 1... Kg7 2. Ne2 Kf7 3. Ng1 Kf6 4. Nh3 Ke6 5. Nf2 (5. Nxg5+? hxg5 =) 5... Kf6 6. Nd1! This move explains why we have not chosen 1.Kd1?! 6... Ke6 7. Nb2 Kd6 8. Na4 Kc6 9. Kc1! Another precise move which puts black into zugzwang. 9... Kd6 10. Nb6 Ke7 11. Nd5+ (minor dual 11. Nc8+ Ke6 12. Na7 Kd7 13. Nb5) 11... Ke6 12. Nc7+ Kd7 13. Nb5 Kc6 14. Na3! Preparing this sacrifice was the reason of moving the white king to the c-file. The knight cannot be taken because the pawn endgame is winning. 14... Kd6 15. Nc2! This move explains why we have not chosen 9.Kc2?! 15... Ke6 16. Ne1 Kf6 17. Ng2 Ke6 18. Kd1(2) Kf6 19. Nh4! +- The white king is close enough so the knight cannot be taken and it will finally reach the f5 square.

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Thursday, 14 September 2017

Study 125

Á. Rusz & M. Minski & S. Nielsen
Magyar Sakkvilág
2017

Draw

1. Ke8 1. e8=Q? Qh8# 1... Qa4! battery 2. Kf8 2. f8=Q? Ne5+ -+; 2. h8=Q? Nd4+! 3. Kf8 Ne6+ 4. Kg8 Qg4+ 5. Kh7 Qh5+ 6. Kg8 Qg6+ 7. Qg7 Qxg7# 2... Qa1! 2... Qd4 3. Ke8 positional draw 3. Ke8 Kb7! 4. h8=Q! 4. f8=Q? Ne5 5. Qf5 Qa8+ -+ 4... Ne5! 4... Qxh8+ 5. f8=Q Qh5+ 6. Qf7 Qh8+ 7. Qf8 positional draw; 4... Qa8+ 5. Kd7 Qxh8 6. f8=Q (6. e8=Q? Qd4+ 7. Ke6 Qe5+ -+) 6... Qh3+ 7. Kd6 = (7. Ke8? Ne5 -+) 5. Qxe5! Qa8+ 5... Qxe5 6. f8=Q =

6. Qb8+!! Thematic try: 6. Kd7? Qc8+ 7. Kd6 Qc6# position X, mate with self-block 6... Qxb8+ 7. Kd7 Qc8+ 7... Qc7+ 8. Ke6 (8. Ke8? Qc8#) 8... Qc4+ 9. Kf6 = 8. Kd6 Qc6+ position X without the wQe5 9. Ke5 =

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Study 124

Árpád Rusz
Magyar Sakkvilág
2017

White wins

1. Bg6! 1. f7? Qxg7 2. fxe8=Q+ Bxe8 3. Qh4+ Qe7 (3... Kd7? 4. Ba4#) 4. Qd4+ Qd7 5. Qb6+ Ke7 6. Qc5+ Kf7 = (6... Kd8? 7. Ba4! Qxa4 8. Qc7#) 1... Re7! 2. fxe7+ Kxe7+ 3. Be8! 3. Kc7? Qd8+! 4. Kxc6 Qd5+ 5. Kb6 Qb3+ 6. Kc5 Qc3+ 7. Kb5 Qb3+ 8. Ka5 Qa3+ 9. Kb5 Qb3+ perpetual check 3... Bxe8 3... Qxg7 4. Bxc6 +- 4. Qh4+! 4. Qg5+? Kd7 5. Qd2+ Ke7 (5... Kc6? 6. Qd6+ Kb5 7. Qf8 +-) 6. Qg5+ Kd7 positional draw; 4. Qh8? Kf7! -+ (4... Bf7+? 5. Kc7 Qe8 6. Qh4#) 4... Kd7 4... Kf7 5. Qf6# 5. Qb4! Bg6+ 5... Bf7+ 6. Qf8 Kc6 7. Kc8 Kd5 8. Kd7(8) 8... Kxe5 9. Ke7 +-; 5... Kd8 6. Qd6+ Bd7 7. Qf8+ +- 6. Qf8 Bh7 6... Bf7 7. Kb7 +- zugzwang 7. Kb7! +- zugzwang

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Monday, 11 September 2017

Study 113a

N. Kralin
Chavchavadze MT
1987
Special Prize

White wins

1. Kg3! Thematic try: 1. Kxh3? Kc3 2. Nc6 Kxc2 3. Nxd4+ Kb2 4. a4 Kc3 5. Nb3! Kxb3 6. a5 Kc4! (dual 6... Kc3! 7. Kg3 Kd4! 8. a6 Ke3 =) 7. a6 Kd3 8. a7 f2 9. a8=Q f1=Q+ = 1... Kc3 2. Nc6 Kxc2 3. Nxd4+ Kb2 4. a4 Kc3 5. Nb3! 5. a5? Kxd4 = 5... Kxb3 5... Kb4 6. a5 +- 6. a5 Kc4 7. a6 h2 8. Kxh2 Kd3 9. a7 f2 10. a8=Q f1=Q 11. Qa6+! +-

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Related study: Study 113

Friday, 8 September 2017

Blockade 1

C. Behting
Bohemia
1906
2nd/5th Prize

Draw

1. Kc6!! mutual zugzwang 1. Nf3? h3 2. Ke4 h2! 3. Ng3+ Kg4 4. Nxh2+ Kxg3 5. Nf3 Kf2! -+; 1. Ng7+? Kg5 2. Nf3+ (2. Ne6+ Kf6 -+) 2... Kg4 3. Nf5! (3. Nh2+ Kf4! -+) 3... h3! 4. Ke4 g1=Q! 5. Nxh6+ Kh5 6. Nxg1 h2 7. Nf3 h1=Q 8. Nf5 Kg4 -+; 1. Ng3+? hxg3 2. Nf3 Kg4 3. Ke4 h5 -+; 1. Nxh4? Kxh4! 2. Nf3+ Kg3 3. Ng1 h5 -+ 1... g1=Q 1... h3 2. Ng3+ Kh4 3. Ne2 h2 4. Nf3+ Kh3 5. Nxh2 = 2. Nxh4! Qh1+ 2... Kxh4 3. Nf3+ = 3. Nhf3 positional draw - blockade


blockade

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Monday, 4 September 2017

Study 123

Árpád Rusz
Malyshko-105 MT
2017

White wins

Thematic try: 1. Nb3? Ne6+! Black thematic try: 1... Nc6+? 2. Kxd5 Nb8 3. Nc5 Kc2 4. Na6! Nd7 5. Ke6 Nb6 6. Nc7 Kb3

7. Na8!! The white knight leaves the d5 square empty for the king. 7... Na4 8. Kd5! +- 2. Ke5! 2. Kxd5 Nf8 3. Nd4 Kd2 4. Ne6 Nd7 5. Kc6 Ne5+ 6. Kd5 Nd7 positional draw 2... Nf8 3. Nc5 d4 or 3... Kc2 4. Kf6 d4 4. Kf6 Kc2 5. Kf7 d3 6. Nxd3 Nd7 7. Ke8 Nf6+! 7... Nb6? 8. Nc5 Kc3 9. Na4+! = 8. Ke7 Nd5+ 9. Ke6 Nb6 10. Nb4+ Kb3


Position X'

11. Nd5 Unfortunately, the white knight blocks the d5 square. 11... Na4! 12. d7 12... Kd5 was not possible anymore. 12... Nc5+ =

Solution: 1. Nf3! Nc6+! The black knight tries to stay on the other flank compared to the white knight's position. 1... Ke2 2. Ne5 Ne6+ 3. Kxd5 Nf8 4. Ng6! +- 2. Kc5! 2. Kxd5? Nb8 3. Nd4 Kd2 4. Nc6 Nd7 5. Ke6 Nc5+ 6. Kd5 Nd7 positional draw 2... Nb8 3. Ne5 d4! 4. Kb6! There is no time to pick the pawn! 4... Ke2 5. Kb7! The black knight is caught but it will manage to escape. 5... d3 6. Nxd3 There was no time to pick the black knight. 6... Nd7 7. Kc8! This is the best square to avoid some nasty knight forks. 7. Kc6? Nf8! 8. Ne5 Kd2! (8... Ke3? 9. Kd5 = mutual zugzwang) 9. Ng6 Nxg6 10. d7 Ne5+ = 7... Nb6+! Before going to the longer flank, the black knight tries to chase the king to a less favourable square. 8. Kc7 Nd5+ 9. Kc6 Nf6 By pushing the white king to c6, black has managed to dismiss g4 as a square for a knight sacrifice. 10. Nf4+ Kf3


Position X

We have a situation similar to the initial position: the attacked knight has to decide again which way to go. 11. Nh5!! The white knight finds another square to sacrifice itself using the extra file. 11. Nd5? is bad because it blocks the d5 square: 11... Ng4! 12. d7 Ne5+ = 11... Ng4 12. Kd5! +- This move is the reason why the d5 square was left empty!

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Asymmetry 6

M. Minski
Schach
2007

Draw

1. Rb3+! 1. O-O? Rbg5+! 2. Bg4 Rxg4#; 1. Rh3+? Rxh3 2. Bxh3 (2. Rxb5 Rh1#) 2... Rxb1# 1... Rxb3 2. O-O! 2. Bxb3? Rxh1#; 2. Rxh5? Rb1# 2... Rbb5 2... Rg5+ 3. Kh2 Rb6 4. Rf5! Rxf5 5. Bxf5 Kf3 6. Bc8! Rh6+ 7. Kg1 Rg6+ 8. Kf1! Rc6 9. Bb7 = 3. Re1+ Kf3 4. Rf1+ Kg3 5. Ra1! 5. Rc1? Rhc5 6. Rd1 Rc3 -+; 5. Rd1? Rbg5! 6. Rd3+ Kf4+ 7. Kf2 Rh2+ 8. Kf1 Ra5! 9. Rd1 (9. Bb3 Ra3 -+) 9... Rh1+ 10. Ke2 Re5+ -+ 5... Ra5 6. Rb1! Rhb5 6... Rab5 7. Ra1 Ra5 8. Rb1 positional draw 7. Rd1! Rb2 7... Ra3 8. Bc4! = 8. Rd3+ Kf4 9. Rd1 Rg5+ 10. Kh1! 10. Kf1? Ke3 11. Re1+ Kf3 -+ 10... Rh5+ 11. Kg1 Rbh2 12. Bd5 = 12. Bb3? Rh1+ 13. Kg2 R5h2#

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Asymmetry 5

G. Nadareishvili
Kommunist
1974
- correction -

White wins

1. Qb5!! Thematic try: 1. Qh5? Rb1+ 2. Qd1 Rh1+ 3. Kf2! Rhxd1 (3... Rbxd1? 4. e8=Q+ Kd3 5. Qb5+ c4 6. Qxd5+ +-) 4. e8=Q+ Kd3 5. Qe5 Rd2+ 6. Kg3 Rg1+ 7. Kh3 Rh1+ perpetual check 1... Rh1+ 2. Qf1 Rb1+ 3. Kd2! Rbxf1 3... Rhxf1 4. e8=Q+ Kf3 5. Qh5+ g4 6. Qxf5+ +- 4. e8=Q+ Kf3 5. Qe5! Rf2+ 6. Kc3 Rc1+ 7. Kb3 Rb1+ 8. Ka3! +- 8. Ka4?? Ra2#

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Asymmetry 4

L. Loewenton
Hungarian Chess Federation Ty
Commendation
- correction by Rusz (2017) -

Draw

1. Ke3! 1. Kc3? Kc1 2. Re8 b1=Q 3. Bxb1 Kxb1 4. Rd8 Kc1! -+ (4... f1=Q? 5. Rd1+! Qxd1 echo stalemate) 1... Ke1 2. Rc8 f1=Q 3. Bxf1 Kxf1 3... b1=Q 4. Bd3 Qb2 (4... Qd1 5. Rc2 Qd2+ 6. Rxd2 stalemate) 5. Rc2 Qa3 6. Re2+ Kd1 7. Rd2+ Kc1 8. Rc2+ Kd1 9. Rd2+ perpetual check 4. Rd8 b1=Q 4... Ke1 5. Rh8! = 5. Rd1+? Qxd1 echo stalemate

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Asymmetry 3

M. Minski
Gurgenidze JT (tt)
2008
1st Prize

draw

1. Bd4! Thematic try: 1. Bf4? Re4! 2. Bh2 Kd3 3. Kd6 Rh4 4. Be5 Rh6 5. Bg7 Rg6 -+ 1... Re4 2. Bb2! 2. Ba1? Kf3! 3. Kf6 Ra4! 4. Be5 Ra6 -+ 2... Kf3 3. Kf6 Rb4 4. Ba3! 4. Be5? Rb6 5. Bc7 Rc6 -+ 4... Rb6 5. Ke5 Kg4 5... Rb3 6. Bd6 Re3+ 7. Kf6 = 6. Be7! 6. Bd6? Rxd6 7. Kxd6 Kf5 -+; 6. Bf8? Kg5 7. Be7+ Kg6 -+ 6... Ra6 7. Bd8! 7. Bf6? Kh5! 8. Bd8 Kg6 -+ 7... Kh5 8. Kf6 Rc6 9. Be7 Ra6 10. Bd8 Kg4 11. Ke5 positional draw

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