Sunday, 24 September 2017

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

Unknown ("electricmaster23")
Internet (www.reddit.com)
2017
- correction by Rusz -

White wins

A very cool fight against a fortress was presented by an unknown author who called this study "The Trojan Horse Puzzle". In the original position 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. 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! +-

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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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Asymmetry 2

A. Selezniev
Deutsches Wochenschach
1917
- version -

Draw

1. Kd6! Thematic try: 1. Kf6? Kf4 2. Kg6 Kg3 3. Kf5 h3 4. Ke4 h2 -+; 1. Kd5? b3 -+; 1. Kf5? h3 -+ 1... Kd4 1... Kf4 2. Kc6! (2. Kc5? Ke5 -+) 2... Ke5 3. Kd7 = 2. Kc6 Kc3 3. Kd5! b3 4. Ke4 b2 5. Ba2! =

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Asymmetry 1

A. Hildebrand
Springaren
1954

White wins

1. Bc8! Thematic try: 1. Be8? Kxe8 2. Kc4 Kd8 3. Kb5 Kc8 4. Ka6 Kb8 =; 1. Ke4? stalemate 1... Kxc8 2. Ke4 Kd8 3. Kf5 Ke8 4. Kg6 Kf8 5. Kh7! +-

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Wednesday, 30 August 2017

Study 117a

P. Joița
Mandil MT
1980

Draw
- cooked -

1. Nh6+ Dual: 1. Ne7! Rd2+ 2. Kf1 Kxh4 3. Nf5+ Kg5 4. Nxg7 Kxg6 5. Ne6 Kf5 6. Nc5 Ke5 7. Ke1 = 1... Kf4 2. Bg3+ Kg5 3. Nf5 Dual: 3. Be5! Rd2+ 4. Kf3 Rxg6 5. Bf4+ = 3... Rd2+ 4. Kh3 Dual: 4. Kf3! Rxg6 5. Bf4+ = 4... Rxg6 5. Nh4! Rf6 5... Rh6 6. Bf4+! Kxf4 stalemate 6. Nf3+! Rxf3 stalemate

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Related study: Study 117

Tuesday, 29 August 2017

Study 122

Árpád Rusz
Polish Chess Federation Ty
2017

White wins

1. Bb7! The black rook is pinned. 1. Rxe4? Bh7! = 1... Kg3! Black unpins its rook and forces white to capture on e4 with the rook. 2. Rxe4 Bh7 Now the white rook is pinned. It could be unpinned by a king move but where should the king go?

3. Ka1!! This is the correct way to try to get out of the pin! 3... Bxe4 4. Bxe4 Nf2

5. Bh1!! Another move to a corner square! White is moving to a square just left by black (Umnov Theme). Thematic try: 5. Bb7? Kf4 6. a4 Ke5 7. a5 Kd6 8. a6 Kc7 9. a7 Kxb7 = 5... Kf4 5... Nxh1 6. a4 Nf2 7. a5 Ne4 8. a6 Nc5 9. a7 +- White is lucky to have its king is on a1! With the king on b2, black still could have saved the game by 9... Na4+ followed by 10... Nb6. 6. a4 Ke5 7. a5 Kd6 8. a6 Kc7 9. a7 +-

The thematic try on move three also features a king move to a corner square: 3. Kb2? Bxe4 4. Bxe4 Nf2 5. Bh1 Nxh1 6. a4 Nf2 7. a5 Ne4! 8. a6 Nc5 (or 8... Nd6 9. a7 Nc4+ 10. Kb3 Nb6 etc.) 9. a7 Na4+ 10. Kb3 Nb6 11. Kb4 Kf4 (11... Na8) 12. Kb5 Na8 13. Kc6 Ke5 14. Kb7 Kd6 15. Kxa8 The problem is that the king gets stalemated there: 15... Kc7 16. a4 Kc8 17. a5 Kc7 18. a6 Kc8 stalemate

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Study 121

Árpád Rusz
Shakhmatnaya Kompozitsia
2017

White wins

1. Ng3 The knight takes the e4 square from the black king. 1... Nd6 1... Ke3 2. f5 Kf4 3. b4! Kxg3 4. b5 Kf4 5. b6 Nd6 6. f6 Ke5 7. b7! (7. f7? Nxf7+ =) 7... Nxb7 8. f7 +- 2. Kg7 2. f5? Ke5 3. Kg7 Nxf5+ 4. Nxf5 Kxf5 = 2... Ne4 Now the white knight has to leave. Fortunately, the black king still cannot attack efficiently the f-pawn because the e4 square is blocked. 2... Ke3 3. f5 Kf4 4. Kf6! Kxg3 5. Ke6 +-

3. Nh1!! The only way to win is by a Switchback move and a voluntary self-incarceration of the white knight! The knight had 5 other squares to go, let's see why were they wrong:
3. Nxe4? Kxe4 4. b4 Kxf4 5. b5 Ke5 6. b6 Kd6 7. b7 Kc7 =;
1st thematic try: 3. Nh5? Kc4 4. Kf7 Kb3 5. Ke6 Kxb2 6. Ke5 Position 1 6... Nf2! =;
2nd thematic try: 3. Nf1? Kc4 4. Kf7 Kb3 5. Ke6 Kxb2 6. Ke5 Position 2 6... Nc5! = (6... Nf2? 7. f5 Ng4+ 8. Ke6 Kc3 9. Ne3! +- echo sacrifice);


echo sacrifice

3. Nf5+? Kc4 4. Ne3+ Kd3 5. Nd1 Nd6 6. Kf6 Ke4 7. Kg5 Nf7+ 8. Kg4 Nh6+ 9. Kg3 Nf5+ 10. Kg4 Nh6+ 11. Kg5 Nf7+ perpetual check;
3. Ne2+? Ke3 4. f5 Kxe2 =
3... Kd5! 3... Kc4 4. Kf7! Kb3 5. Ke6 Kxb2 6. Ke5 Position 3 6... Nc5 7. Nf2! +-; 3... Ke3 4. f5 Kf4 5. f6 Nxf6 6. Kxf6 +- 4. f5 4. Kg6? Ke6 5. f5+ Ke5 mutual zugzwang 6. b4 Kd5 7. b5 Kd6! 8. Ng3! Nxg3 9. f6 Ne2 10. f7 Nf4+ 11. Kf5 Ne6 12. b6 Nf8 13. b7 Kc7 = 4... Kc4! Only now! Kf7 is not possible anymore. 4... Ke5 5. Kg6 +- mutual zugzwang 5. Kg6! 5. Kf7? Nd6+ 6. Ke6 Nxf5 7. Kxf5 Kb3 = 5... Kb3 6. Ng3! +- White white wins repeating the first move from the initial position.


echo sacrifice

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Tuesday, 11 July 2017

Study 120

Árpád Rusz
WCCT-10
2016-17
(D31)

White wins

1. Nd8 Nc7+! 1... Bxd4 2. Nf7#; 1... Ng5 2. Bc4 +- 2. Kf8! f1=Q+ 3. Nf7+ Qxf7+ 4. Kxf7 Ng5+ 5. Kg6 Nxh7 6. Bxh7 Bxd4! 7. Bxd4 Ne6

8. Ba1!! Thematic tries: 8. Be5? Nf8+ 9. Kf7 Ng6! 10. Bxg6/Kxg6 stalemate; 8. Bc3? Nf4+ 9. Kg5 Nd5! (9... Ne2? 10. Bb2 Kxh7 11. Kg4 g5 12. Kxg5 Ng3 13. Kf4 Nf1 14. Bc1 +-) 10. Bb2 Kxh7 =; 8. Bb2? Nf8+ 9. Kf7 Ng6! 10. Bg8 Ne5+! 11. Ke8 (11. Bxe5 stalemate; 11. Kf8 Ng6+ 12. Kf7 Ne5+ positional draw) 11... Nd3! (11... Nc4? 12. Bxc4 +-) 12. Bd4 Kxg8 = 8... Nf8+ 8... Nf4+ 9. Kg5! (9. Kf5? Nxg2 10. Bg6 Nh4+ =) 9... Ne6+ 10. Kf5 Nf8 11. Bg6 Nxg6 12. Kxg6 +- 9. Kf7 Nxh7 9... Ng6 10. Bg8 +- double Switchback (K & B) 10. Bxg7#

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Here you can find the other entries from the tourney: WCCT-10

Monday, 26 June 2017

Study 106b

Árpád Rusz
StrateGems
2016
3rd Prize
- version -

White wins

1. Rg8+! Thematic try: 1. Rh8+? Rd8 2. Rxd8+ Nxd8 3. c7 Rb3+ 4. Ka6 Rb8! mutual zugzwang 5. Rf6 (5. Rh6 Nf7 6. cxb8=Q+ Kxb8 =) 5... Nc6! 6. cxb8=Q+ (6. Rxc6 Rb6+! 7. Kxb6 stalemate) 6... Nxb8+ 7. Kb6 Nd7+ =; 1. Rxe6?? Rcxc6+ -+ 1... Rd8 1... Nd8 2. Rxd6 +- 2. Rxd8+ Nxd8 3. c7 Rb3+ 3... Nf7 4. Rh3! +- 4. Ka6 Rb8! self-fork (4... Ra3+ 5. Kb5 Rb3+ 6. Ka4! (6. Kc4? Rb8! 7. Rh8 Rc8 The black rook is pinning the pawn! 8. Rxd8 Kb7=) 6... Rb8 7. Rh8 +-)

5. Rg6!! mutual zugzwang 5. Rf6? Nc6! 6. cxb8=Q+ (6. Rxc6 Rb6+ 7. Kxb6 stalemate) 6... Nxb8+ 7. Kb6 Nd7+ = 5... Rc8 (5... Nf7 6. cxb8=Q+ Kxb8 7. Rg8+ Kc7 8. Rg7 +-; 5... Nc6 6. cxb8=Q+ Nxb8+ 7. Kb6 Nd7+ 8. Kc7 +- 6. Rg8 Rxc7 7. Rxd8+ Rc8 8. Rxc8#

Related study: Study 106

Thursday, 22 June 2017

Study 119

Árpád Rusz
Polášek-Vlasák-60 JT
2017
2nd Commendation

White wins

1. Rh2 1. Rd2? Be7! (1... Bc7? 2. Rd5+ Kg4 3. Bg7 Bf4 4. Kf1! Kf3 5. Rd3+ Ke4 6. Rd4+ Kf3 7. Rxf4+! R sacrifice Kxf4 8. h6 Ke4 9. h7 Ra8 10. h8=Q Rxh8 11. Bxh8 Kd5 12. Bd4! B sacrifice 12... Kxd4 13. c6 +-) 2. Rd5+ Kg4 (2... Kh4? 3. Bg7 Bg5 4. h6 Bxh6 5. Bxh6 Rxh6 6. Kf2 Re6 7. Kf3 +-) 3. Bg7 Bg5 4. Rxg5+ R sacrifice (4. h6 Bxh6 5. Bxh6 Rxh6 =) 4... Kxg5 5. h6 Kg6 = 1... Kh6 1... Rh6 2. Bc1+ +-; 1... Bc7 2. Rh1 Ra2 3. Bd4 Kh6 4. Be3+ +- 2. Bc1+ Bg5 3. Bxg5+ Kxg5

4. Rh1!! 4. h6? Ra1+! 5. Kg2 Ra2+ 6. Kg3 Ra3+ 7. Kf2 Ra2+ 8. Kg3 Ra3+ perpetual check - chameleon echo; 4. Rc2? Kxh5 5. c6 Ra8 6. c7 Rc8 = 4... Ra2 4... Ra1+ 5. Kg2! +- (5. Kh2? Ra5 6. Rc1 Kxh5 7. c6 Ra8 8. c7 Rc8 =) 5. h6 5. c6? Kh6 = 5... Kg4 6. c6! 6. h7? Ra1+ 7. Kg2 Ra2+ 8. Kf1 Ra1+ 9. Kg2 Ra2+ perpetual check - chameleon echo 6... Kg3 7. Kf1 Ra1+ 8. Ke2 Rxh1 9. c7 Rc1 10. h7 +-

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