Monday, 29 August 2016

Visiting all edges of the board 1

O. Pervakov
Sadykov-80 MT
2016
1st Prize

White wins

1. Nb6+ 1. Rxd3? Rh8 = 1... Kb8 1... Kb7 2. Rf5 Nxh7 3. Rf7+ Ka6 4. Rxh7 +- 2. Nd7+ Ka8 3. Nf8! Nxh7 4. Nxh7 e4 5. Re3 5. Rh3? Rg8+ 6. Kf2 Rg4 7. Rh2 Ka7 8. Ke3 h3! 9. Rxh3 Rg2 10. Kxe4 Rxd2 = 5... Rg8+ 6. Kh1! 6. Kh2? h3 7. Rxh3 Rg6 = 6... h3 7. Nf6 Rg2 8. Nxe4 Re2


Paralysis

9. a6! 9. Kg1? h2+ 10. Kh1 Kb8 11. a6 Ka7 = mutual zugzwang 9... Ka7 10. Kg1 h2+ 11. Kh1 mutual zugzwang 11... Ka8 11... Kxa6 12. Rxe2 (minor dual 12. Nc5+) 12... dxe2 13. Nc5+ Kb5 14. Nd3 Kc4 15. Ne1 +- The knight has visited all edges of the board!

12. Nc3 Rxd2 13. Nb5 Rb2 14. Re8#

Study 102a

V. Tarasiuk
Sadykov-80 MT
2016
Commendation
- version by A. Zhukov -

Draw

1. d7 d1=Q 2. d8=Q+ Qxd8 3. Nxd8 b5 3... Ke7 4. Nxb7 = 4. Nxe6+ Kf7 5. Ng5+ Kf6 6. Ne4+ Ke5 7. Nc3! b4 8. Na2 b3 9. Nc1 b2 10. Nd3+ Kd4 11. Nxb2 g5 12. Nd1 g4 13. Nf2 g3 14. Nh3 = The knight has visited all files, ranks and edges of the board!

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Related studies: Study 102

Study 102

Á. Rusz
Internet (RCS blog)
2016
- after V. Tarasiuk & A. Zhukov -

Draw

1. Nh7+ Ke7 1... Ke8 2. Nd6+ Kd7 3. Nxb5 Ra8+ 4. Kg7 = 2. d6+ Ke6! 2... Kd7 3. Nf8+ Kc6 4. d7 Ra8 5. d8=Q Rxd8 6. Nxd8+ =; 2... Ke8 3. Nc5 g4 4. Nf6+ Kf7 5. Nxg4 = 3. Nf8+! 3. Nxg5+? Kd7 4. Nc5+ Kxd6 -+ 3... Kf7 4. d7 Ra8 5. d8=Q 5. Nd6+? Ke7!


chameleon echo

(5... Kxf8?? 6. Nc8 +-) 6. Nc8+ Kd8 7. Nb6 Rb8 8. Ne6+ Ke7+ 9. d8=Q+ (9. Nc8+ Kxd7 -+ chameleon echo)


chameleon echo

9... Rxd8+ 10. Nxd8 Kxd8 -+ 5... Rxd8 6. Nxd8+ Kxf8

7. Ne6+ Kf7 8. Nxg5+ Kf6 9. Ne4+ Ke5 10. Nc3! b4 11. Na2 b3 12. Nc1 b2 13. Nd3+ Kd4 14. Nxb2 g5 15. Nd1 g4 16. Nf2 g3 17. Nh3 = This knight has visited all files, ranks and edges of the board!

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Related studies: Study 102a

Sunday, 28 August 2016

Visiting a 4x4 square 1

G. Kasparyan
Fizkultura i Sport Committee Uzbekistan
1947
2nd Prize

White wins

1. Rc2+ Qxc2 2. Nb4+ Kb1 3. Nxc2 Rd3+ 4. Kh4 Rd4+ 5. Kh5 Rd5+ 6. Kh6 Rd6+ 7. Ne6! 7. Bg6? Rdxg6+ 8. Kh5 R6g5+ 9. Kh6 (9. Kh4?? Kxc2 -+) 9... Rg6+ perpetual check 7... Rxe6+ 8. Kh5 Re5+ 9. Kh4 e1=Q+ 9... Re4+ 10. Kh3 +- 10. Nxe1 Re4+ 11. Kh3! 11. Kh5? Re5+ 12. Kh6 Re6+ 13. Bg6+ Rgxg6+ 14. Kh5 Rh6+ 15. Kg5 Reg6+ = 11... Re3+ 12. Nf3! Rxf3+ 13. Kh4 Rf4+ 14. Kh5 Rf5+ 15. Kh6 Rf6+ 16. Bg6+! Rfxg6+ 17. Kh5 R6g5+ 18. Kh4 R5g4+ 19. Kh3 R4g3+ 20. hxg3 +- The black rook has visited all squares from the d3-d6-g6-g3 4x4 territory!

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Pieces in all corners 1

S. Didukh
Olympic ty Sochy
2014
6th Prize

Draw

1. Qe4 Nf2 2. Qh4! 2. Qxa8+? Bg8 3. g6 h1=Q+ 4. Qxh1 Nxh1 -+; 2. Qb7? Bf7+! -+ (2... Bg8? 3. Kg6 Bh7+ 4. Kf7 +-) 3. g6 Be8/Bg8 4. Qxa8 h1=Q+ 5. Qxh1 Nxh1 -+ 2... h1=Q 3. Qxh1 Bf7+! 3... Bd1+ 4. Qxd1 = 4. g6 Bxg6+ 5. Kg5+!! 6th WCCT Theme Thematic try: 5. Kxg6+? Nxh1 -+ mutual zugzwang 5... Nxh1 6. Kxg6 This position is a mutual zugzwang with pieces on all four corner squares!

6... Nc7 6... Ng3 7. Nc2! (7. Nb3? Ne2! 8. Nc5 Nc7 -+) 7... Nc7 8. Nd4 see the main line 7. Nb3! 7. Nc2? Nb5! 8. Ne3 Ng3 9. Nd5 Ne2! 10. Kg5 Nd6 11. Nf6! Nf4! 12. Kxf4 gxf6 -+ 7... Ng3 7... Ne6 8. Kf5 = 8. Nd4 Kg8 9. Ne6! Nxe6 stalemate

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Study 101

Á. Rusz
RCS blog
2016
- after S. Chimedtzeren -

White wins

All four corners of the board are empty in the starting position. 1. Rb7+ Ka8 The first move to a corner square. 2. Be4! (Thematic try: 2. Bh1?? Qc2+ -+) 2... Qe3! (2... Qd4+ 3. Rb4+ +-) 3. Bh1! The second move to a corner square. 3... Qe8+ Roman Theme. The black queen cannot reach the c2 square anymore so it has to find another square to give a check.4. Ka3 Qf8+ 5. Ka2 Qg8+ 6. Ka1! The third move to a corner square. 6... Qh8+ The fourth move to a corner square. Now all four corners are full!

7. Kb1 h2 8. Rh7+ Kb8 9. Rxh8+ +- The last move to a corner square. During the main line, all five pieces have moved to a corner square!

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Related studies: Study 101a

Study 101a

S. Chimedtzeren
L'Italia Scacchistica
1975
2nd Prize

White wins

1. Be4! 1. Bh1?? Qc2+ 2. Rb3+ Ka7 -+ 1... Qe3 2. Bh1! Qe8+ 3. Ka3 Qf8+ 4. Ka2 Qg8+ 5. Ka1 Qh8+ 6. Kb1! +-

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Related studies: Study 101

Study 100

Á. Rusz
4th UAPA Ty
2016
- section B1 -

White wins

1. c6! bxc6 1... axb6 2. Nxb6+ Kc5 3. c7! Bxc7 4. Kxc7 = 2. Nxa7! The knight starts an interesting journey: it will visit all squares from a 3x3 square-shaped territory via c8-a7-c6-b8-a6-c7-a8-b6!


The knight's path

2. bxa7? Bxa7 = 2... Kc5 2... c5 3. Nb5 c4 4. b7 Kc5 5. Kc8 Be5 6. Nc7 c3 7. b8=Q +- 3. Nxc6 Kxb6 4. Nxb8 Kc5 5. Na6+ Kb6 6. Nc7 Kc5 7. Na8! Kb4 8. Nb6 +- This move completes the full 3x3 journey!


The visited squares by the knight

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Study 99

Á. Rusz
4th UAPA Ty
2016
- section B1 -

White wins

1. h5 1. Rg7? h5 = 1... Kf2 1... h6 2. Rg6 +- 2. Rg6!! 2. Rg7? h6 3. Rg6 Kf3 4. Rxh6 Kg4 = 2... Be4 2... hxg6 3. h6! Be4 4. h7 +- 3. Ra6! 3. Rf6+? Kg3 4. Kb4 Kg4 =; 3. Rg5? h6 4. Rg6!? Kf3 5. Rxh6 Kg4 6. Re6 Bc2+ = 3... Kg3 4. h6 Kg4 5. Ra5 Bf5 6. Kb5! 6. Kb4? Kg5 7. Kc4 Kg6 8. Ra6+ Kg5/Kh5 9. Ra5 Kg6 positional draw 6... Kg5 7. Kc6 Kg6 8. Kd6 Bg4 9. Ra4 Bh5 10. Ke5/Ke6/Ke7 Kxh6 11. Kf6 Bg6 12. Rh4+ Bh5 13. Kf5! +- zugzwang 13. Rh1? stalemate

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Saturday, 27 August 2016

Study 98

Á. Rusz
4th UAPA Ty
2016
- section B1 -

White wins

1. Kb2 Ka7 2. Kc3 Kb6 3. Kd4 Kxc6 4. Ke5 Kd7

5. Kf6!! Thematic try: 5. Kxf5? c5 mutual zugzwang 6. g4 (6. Kg6 Ke7! 7. Kg7 Ke6 8. Kg6 Ke7 positional draw) 6... c4 7. gxh5 c3 8. h6 c2 9. h7 c1=Q 10. h8=Q Qc2+ 11. Kg5 Qg2+ perpetual check 12. Kh6


Position B

12... Qc6+! The 6th rank is open! 13. Kg5 Qg2+ perpetual check 5... Kd6 5... c6!? 6. Ke5! Kc7! (6... Ke7 7. Kxf5 c5 8. Ke5 =) 7. Kxf5 (7. Ke6? c5 8. Kxf5 Kd7! =) 7... c5 8. Kg6! (8. Ke5? Kc6 9. f5 c4 10. f6 Kd7 =; 8. g4? c4 9. gxh5 c3 10. h6 c2 11. h7 c1=Q 12. h8=Q Qc2+ 13. Kg5 Qg2+ perpetual check 14. Kh6 Qc6+ 15. Kg5 Qg2+ perpetual check) 8... c4 9. f5 c3 10. f6 Kd7 (10... c2 11. f7 c1=Q 12. f8=Q +-) 11. f7 Ke7 12. Kg7 +- 6. Kxf5 c5 7. g4! 7. Kg6? Ke7! positional draw 8. Kg7 Ke6 9. Kg6 Ke7 positional draw; 7. Ke4? Ke6 = 7... c4 7... hxg4 8. Kxg4 c4 9. Kf3 +- 8. gxh5 c3 9. h6 c2 10. h7 c1=Q 11. h8=Q Qc2+ 12. Kg5 Qg2+ 13. Kh6! +-


Position A

White wins because there is no check on c6, the 6th rank is closed!

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Related study: Study 98a

Study 98a

Á. Rusz & S. Didukh
NONA
3rd Special Prize
2008

Draw

1. h4! Thematic try: 1. Ke2? Kd4 (1... Kc4? 2. Kf3 Kd4 3. c3+! Kxc3 4. f5! g5 5. Ke4 f6 6. Kd5 g4 7. Ke6 h4 8. Kxf6 g3 9. hxg3 h3 10. Kg7 h2 11. f6 h1=Q 12. f7 =) 2. Kf3 f6! (2... f5? 3. Kg3 Kc3 4. Kh4 Kxc2 5. Kg5 =) 3. h4 f5 4. Ke2 Ke4 5. Kd2 Kf3! 6. c3 Ke4! 7. c4 Kxf4 mutual zugzwang 8. Kd3 g5 9. c5 gxh4 10. c6 h3 11. c7 h2 12. c8=Q h1=Q 13. Qc7+ Kg4 14. Qg7+ Kh3 -+; 1. c3? Kd5 2. Kc2 Ke4 -+ 1... f5 2. c3! 2. Kd2? Kd4 3. c3+ Ke4 4. Kc2 Kxf4 5. c4 Kg3 6. c5 f4 7. c6 f3 8. c7 f2 9. c8=Q f1=Q -+ 2... Kd5 3. Kc2! 3. Kd2? Ke4 4. c4 Kxf4 -+ mutual zugzwang 3... Ke4 4. c4 Kxf4 5. Kd2! mutual zugzwang 5... g5 5... Ke4 6. Kc3 f4 7. c5 f3 8. Kd2! =; 5... Kg3 6. Ke2 Kg2 7. Ke3 Kg3 8. Ke2 positional draw 6. c5 gxh4 7. c6 h3 8. c7 h2 9. c8=Q h1=Q 10. Qc7+ Kg4 11. Qg7+ Kh3 12. Qc3+ Kg4 13. Qg7+ perpetual check

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Related study: Study 98

Friday, 26 August 2016

Grip 12

M. Hlinka & J. Polasek
Uralski Problemist
2013
Honourable Mention

White wins

1... b1=Q 2. c7+ Kd7 3. Bb5+ Kxd6! 3... Kc8 4. Bd3 Qg1 5. Bf5# 4. c8=Q Qh7+! 5. Kg2! 5. Kg4? b2 6. Qf8+ Kd5 7. Bd3 b1=Q = 5... b2 6. Qf8+! 6. Qd8+? Kc5 7. Bd3 b1=Q = 6... Kd5 7. Qf3+ Kc5 8. Bd3 b1=Q! Which queen to capture? Neither of them! 9. Qe4!!


Grip Theme

9... Qxe4+ 9... Qxd3 10. Nxd3+ Kd6 11. Qxh7 +- 10. Nxe4+ Kd4 11. Bxb1 +-

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Thursday, 25 August 2016

Grip 11

Minski M.
Manvelyan MT
2016
1st Prize

White wins

1. Rf8 Bg2+ 2. Kc8! (2. Kc7? Re7+ 3. Kd8 e1=Q 4. h8=Q Qd1+ 5. Kxe7 Ng6+ =) 2... Ng6 3. h8=Q Nxh8 4. Rxh8 Bh3! (4... e1=Q 5. Nf3+ +-) 5. Rxh3 Kg2 6. Nf3 Kxf3 7. g4+ Kf4 8. Re3! e1=Q (8... Rxe3 9. Nxe3 e1=Q 10. Ng2+ $18) 9. Rf5+! (9. Rxe1? Rxe1 =) 9... Kxg4 10. Rfe5!!


Grip Theme

10... Rc6+ (10... Rxe5 11. Nxe5+ Kf4 12. Rxe1 +-; 10... Qxe3 11. Nxe3+ Kf4 12. Rxe6 +-) 11. Kd7 Qh1 12. R3e4+! (12. R5e4+ $2 Kf5 13. Kxc6 Qxe4+! 14. Rxe4 Kxe4 =) 12... Qxe4 (12... Kf3 13. Kxc6 +-) 13. Rxe4+ Kf5 14. Re5+ Kf4 15. Kxc6 +-

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Monday, 22 August 2016

Perpetual Plachutta 2

E. Dobrescu
Magyar Sakkélet
1982
Special Prize

Draw

1. g6 b1=Q 1... hxg6 2. Ne6 h1=Q 3. Ng7+ Kf7 4. e8=Q+ +- 2. g7 Qa2 3. a7 h1=Q

4. Nd5! Plachutta 4... Qhh2+ 4... Qhxd5 5. g8=Q+ Qxg8 6. a8=Q+ +-; 4... Qaxd5 5. a8=Q+ Qxa8 6. g8=Q# 5. Nf4! Qh1 6. Nd5 Qah2+ 7. Nf4 Q2g1

8. Ng2! Plachutta 8... Qhh2+ 8... Qhxg2 9. g8=Q+ Qxg8 10. a8=Q+ Kf7 11. Qd5+ Kg7 12. Qxg8+ Kxg8 13. e8=Q+ +-; 8... Qgxg2 9. a8=Q+ Qxa8 10. g8=Q# 9. Nf4 Qhh1 10. Ng2! Plachutta 10... Qgh2+ 11. Nf4 Qa2 12. Nd5 perpetual Plachutta

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Perpetual Plachutta 1

J. Rusinek
Problem
1976
1st Prize
- version -

Draw

1. Nc7+ Kd8 2. g6 a1=Q 3. g7 Qa2 4. c4! Qxc4

5. Nd5! Plachutta 5... Qc1+ (5... Qxd5 6. a8=Q+ Qxa8 7. g8=Q#; 5... Bxd5 6. g8=Q+ Bxg8 7. a8=Q#) 6. Nf4! Qg1 (6... Qxf4+ 7. Kg6 +-)

7. Ng2! Nowotny 7... Qc1+ (7... Qxg2 8. a8=Q+ Qxa8 9. g8=Q#; 7... Bxg2 8. g8=Q#) 8. Nf4! Qc4 9. Nd5! perpetual Plachutta 9... Qc1+ 10. Nf4 Qg1 11. Ng2 perpetual Nowotny

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Plachutta 5

Y. Afek & M. Minski
Jenever Quick Composing ty (tt)
2015
3rd Prize

White wins

1. Bc2 Bxc2 2. Rxg3 Rb3 3. d7 Rd1

4. Nd3!! Nowotny, Plachutta 4... Rbxd3 4... Rdxd3 5. g6+ Kh8 6. Rh3+ Rxh3 7. d8=Q#; 4... Bxd3 5. Rh3# (5. d8=Q? Bg6+ -+) 5. g6+ Kh8 6. d8=Q+ Rxd8 7. Rh3#

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Plachutta 4

A. Kuryatnikov & E. Markov
Israel Chess Composition Society
1995
2nd Honourable Mention

Draw

1. Nc6+ Nxc6 2. Ra4+ Kc3 3. Rc5+ 3. Ke3? d1=N+! +-; 3. Ke2? Ba6! 4. Rxa6 Nd4+ -+ 3... Kd3 4. Rd5+ Kc2 5. Ke2 5. Rc4+? Kd1 -+

5... Nd4+! Plachutta 6. Raxd4! 6. Rdxd4? Bg4+! 7. Rxg4 d1=Q+ -+ 6... d1=Q+ 7. Rxd1 Bg4+ 8. Ke1 Bxd1 9. Rc5+! 9. Rxd1? b1=Q 10. Rxb1 Kxb1 11. Kd2 Kxa2 12. Kc2 g6 -+ 9... Kb1 10. Kxd1 Ka1! 10... Kxa2 11. Ra5+ Kb3 12. Rb5+ = 11. Rb5 b1=Q+ 12. Rxb1+ Kxb1 13. g6! Kxa2 13... Kb2 14. Kd2! = 14. Kc2 Ka3 15. Kc3 Ka4 16. Kc4 a5 17. g3! Ka3 18. Kc3 a4 19. g4 Ka2 20. Kc2 a3 21. g5 Ka1 22. Kc1 Ka2 22... a2 23. Kc2 stalemate 23. Kc2 positional draw

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Plachutta 3

L. Pachman
Louma ty Sach
1941
3rd Honourable Mention
- version -

White wins

1. N4d6! (1. N8d6? Ra7! 2. Nxc8 Rxh7+ =) 1... Ra7! 2. Nc7! Plachutta 2... Rcxc7 (2... Raxc7 3. Bc3+! Rxc3 4. Nf7#) 3. Nf7+! Rxf7 4. Bc3+ Rg7 5. Ba1 Rae7! 6. d6! (6. c4? Re5! 7. Bxe5 a1=Q 8. Bxa1 stalemate) 6... Re5! 7. Bxe5 a1=Q 8. d7! (8. Bxa1? stalemate) 8... Qd4! (8... Qxe5 9. d8=Q+ +-) 9. d8=Q+! Qxd8 10. Bxg7#

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Plachutta 2

T. Gorgiev
3rd International Moscow o.t.b. ty
1936
1st Honourable Mention

White wins

1. d7 g2+! 2. Kxg2 2. Bxg2? Rd3 = 2... Re2+ 2... Rg3+ 3. Kf2 Rg8 4. Rh1+ Kg5 5. Rg1+ +- 3. Kf3 Rd2 4. Kf4! Rc3

5. Bd3! Plachutta 5... Rcxd3 5... Rdxd3 6. Rh1+ +-; 5... Rc4+ 6. Ke3! +- (6. Bxc4? Rd4+! 7. Kf5 Rxd7 =) 6. d8=Q+ Rxd8 7. Rh1+ Rh2 8. Rxh2#

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Plachutta 1

H. Rinck
Feuille d'Avis de Lausanne
1932
1st Prize

White wins

1. Bc4! (1. d5? Qxd5! -+ (1... Bxd5? 2. Bc4! +-)) 1... Qxc4 2. Rh1! Bxh1

3. d5! Plachutta 3... Bxd5 (3... Qxd5 4. a8=Q+ Qxa8 5. g8=Q#) 4. g8=Q+ Bxg8 5. a8=Q#

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Sunday, 21 August 2016

Perpetual Grimshaw 1

J. Rusinek
Shakhmaty v SSSR
1975
1st Prize

Draw

1. Bc6+ Kf8 2. Rxf3 Re1 3. Ne2! Nowotny 3... Rxe2 (3... Bxe2? 4. Re3! +-) 4. Rd3! d1=Q! 5. Rxd1 Rd2 6. Re1! Be2 7. Rg1! Bg4 8. Re1! Re2 9. Rd1 Bd2 10. Ra1! Ba5 11. Rd1 Rd2 12. Re1 Be2 13. Rg1 Bg4 14. Re1 positional draw - perpetual Grimshaw

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Loyd-Turton 1

F. Bondarenko & A.P. Kuznetsov
Revista de Romana de Sah
1966

White wins

1. Qf3+ e4! 2. Qxe4+ Nc6! 3. Qxc6+ Rbb7 4. Bh3 d3!

5. Qh1!! Loyd-Turton (5. exd3? f1=Q 6. Bxf1 stalemate; 5. Bg2? f1=Q! =) 5... dxe2 6. Bg2! f1=Q 7. Bxb7+ Rxb7 8. Qxb7#

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Turton 3

O. Pervakov
USSR Team Championships
1985
1st Prize

White wins

1. Bd4! Qb6! 1... Qc6+ 2. Kb4+ Kb1 3. Qb3+ Kc1 4. Bxe3#; 1... Qd6 2. Qc4! +- 2. Bxb6 h1=Q 3. Bd4 Qd1! 3... Qc1+ 4. Kb4+ Qb2+ $1 5. Bxb2+ Kxb2 6. Qb3+ Kc1 7. Qxe3+ +- 4. Qg1! 4. Kc4+? Qxd4+! = 4... e2 4... Qxg1 5. Kc2#

5. Bh8!! Turton 5. Qe1? Kb1! -+ 5... f2 5... Kb1 6. Qb6+ +- 6. Qg7! Qc1+ 6... Kb1 7. Qb7+ Kc1 8. Qb2# 7. Kb3+ Kb1 8. Qa1#

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