Saturday, 15 December 2018

WCCI 2016-18: Árpád Rusz

I present here my list of 6 studies to be sent for the World Championship.
(1)
Árpád Rusz
Marwitz-100 MT, 2016
Special Prize
- version -

White wins

The main line and the two tries all feature different systematic movements!

1st try: 1.f8Q? Ra7+ 2.Kb8 Rab7+! 2...Rhb7+? 3.Kc8 Rc7+ 4.Kd8 Rd7+ 5.Ke8 Re7+ 6.Qxe7+– 3.Kc8 Rbc7+ 4.Kd8 Rcd7+ 5.Ke8 Rde7+ 6.Qxe7 Rxh8+ 7.Kd7 h2 8.Qf7+ Kb1 9.Qb3+ Kc1= 9...Ka1? 10.Qc3++–

2nd try: 1.Qxg7? Rxg7 2.f8Q h2! 3.Qxf3

3...Rg8+!! Paradoxically, black lets the white king to escape from the eight rank! The immediate 3...Rg1? loses because of a Queen staircase on the a and b-files from b3 to b8! 4.Qb3+ Ka1 5.Qa3+ Kb1 6.Qb4+ Ka1 7.Qa5+ Kb1 8.Qb6+ Ka1 9.Qa7+ Kb1 10.Qb8++– 4.Kb7 Rg1! Another check would be fatal: 4...Rg7+?

5.Kc8!! Back to the 8th rank! (5.Kc6? Rg1 6.Qb3+ Ka1 7.Qa3+ Kb1 8.Qb4+ Ka1 9.Qa5+ Kb1 10.Qb6+ Kc1!=) 5...Rg8+ 6.Kd7!+– 5.Qb3+ Ka1 6.Qa3+ Kb1 7.Qb4+ Ka1(2) 8.Qa5+ Kb1 9.Qb6+ Ka1(2) 10.Qa7+ Kb1(2)=

Main: 1.Qxh7! Rxh7 Surprisingly, it is better for white to leave a rook behind one of the dangerous pawns than to have it on g7 as in the second try.

2.f8Q f2! 2...h2 6.Qg8++– 3.Qxf2 3.Qg8+? Ka1! 4.Qxh7 f1Q=; 3.c4? Rh8! 4.Qxh8 f1Q= 3...h2 4.c4+ Kb3 5.Qf3+ Kb4! 5...Kxc4 6.Qe4++– 6.Qh1 Kc5!

The plan that looks logical now is starting to move with the white king towards the rook. But it doesn't work yet! While the black king is on c5 the rook can leave the seventh rank (e.g. by moving to h5). 7.Qd5+ Kb4 8.Qd2+ Kc5 9.Qf2+ Kb4 10.Qb2+ Kc5 11.Qb5+ Kd4 12.Qd5+ Kc3 13.Qh1 Kd4 The black king is not on c5 so the white king can make a move towards the rook! 14.Kb8! The first step. 14...Kc5 Back to c5... White needs to repeat the manoeuvre to gain a tempo for another king move.

15.Qd5+ Kb4 16.Qd2+ Kc5 17.Qf2+ Kb4 18.Qb2+ Kc5 19.Qb5+ Kd4 20.Qd5+ Kc3 21.Qh1 Kd4 22.Kc8! The second step. 22...Kc5

23.Qd5+ Kb4 24.Qd2+ Kc5 25.Qf2+ Kb4 26.Qb2+ Kc5 27.Qb5+ Kd4 28.Qd5+ Kc3 29.Qh1 Kd4 30.Kd8! The third step. 30...Kc5

31.Qd5+ Kb4 32.Qd2+ Kc5 33.Qf2+ Kb4 34.Qb2+ Kc5 35.Qb5+ Kd4 36.Qd5+ Kc3 37.Qh1 Kd4 38.Ke8! The fourth step. 38...Kc5

39.Qd5+ Kb4 40.Qd2+ Kc5 41.Qf2+ Kb4 42.Qb2+ Kc5 43.Qb5+ Kd4 44.Qd5+ Kc3 45.Qh1 Kd4 46.Kf8! The fifth step. 46...Kc5

47.Qd5+ Kb4 48.Qd2+ Kc5 49.Qf2+ Kb4 50.Qb2+ Kc5 51.Qb5+ Kd4 52.Qd5+ Kc3 53.Qh1 Kd4 54.Kg8! +- The last step along the 8th rank.

The white king will finally escape from the last rank. White has a winning position. Notice that this was the 50th move since the last capture or pawn move (4.c4+), so according to the FIDE rules, this position would be a draw! Fortunately, endgame study composition codex doesn't care about that artificial "draw by 50 moves" rule!

Watch this study on a dynamic board! Click here!

(2)
Árpád Rusz
Malyshko-105 MT
2017
2nd Prize

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!

It is paradoxical that the knight is better placed on the edge of the board (h5) or even on a corner square (a8) than in the centre (d5)!

Watch this study on a dynamic board! Click here!

(3)
Árpád Rusz
JPA 85 JT
2017
Special Honourable Mention

Draw

Black has exactly twice as much material than white so it looks very natural to start with a queen promotion. But that would be wrong as black wins by an inner study with two echo checkmates: 1. e8=Q? a2 2. Rf6+ Kg2+ 3. Kc2 3. Kc4 Ra4+! 4. Qxa4 Rh4+ -+ 3... a1=N+! Black chooses to promote the pawn to a knight! 3... Rc3+? 4. Kd2 Rd5+ 5. Ke2 Rc2+ 6. Ke3 Rc3+ 7. Ke2 =

Variation A:

4. Kb2 Rb3+ 5. Kc1 Rc5+ 6. Kd2 6. Kd1 Rb1+ 7. Ke2 Rc2+ 8. Kd3 Rd1+ 9. Ke3 Re1+ -+ 6... Rc2+ 7. Kd1 Rb1#


echo checkmate
Variation B:

4. Kd1 Rh1+ 5. Kd2 Ra2+ 6. Kd3 Rd1+ 7. Kc3 Rc2+ 8. Kb4 Rb1+ 9. Ka3 Rb3+ 10. Ka4 Ra2#


echo checkmate

Let's go back to the initial position of the study.


The actual solution starts with a surprising sacrifice: 1. Rh6!! a2! 1... Rxh6 2. e8=Q a2 3. Qf7+! (3. Qf8+? Kg2 4. Qg7+ (4. Qxh6 a1=Q -+) 4... Rg6 5. Qb2+ Kh3 6. Qc3+ Rg3 -+) 3... Kg2 4. Qb7+! Kg1 5. Qg7+ Rg6 6. Qd4+ = 2. Rxh3+ Kg2

3. Rh1!! 3. e8=Q? a1=Q 4. Qe4+ Kxh3 5. Qf3+ Kh4 6. Qf4+ Kh5 -+ 3... Kxh1 3... Re5 4. Ra1 Rxe7 5. Rxa2+ Kg3 6. Ra5 Rc7 7. Rd5! Kg4 8. Rd4+ Kg5 9. Rd5+ Kg6 10. Rd6+ Kg7 11. Rd5! Rc6 12. Kb4! Kg6 13. Kb5 Rc8 14. Rd6+ Kg5 15. Rd5+ Kg4 16. Rd4+ Kg3 17. Rd3+ (17. Rd5? Rh8 -+) 17... Kg4 18. Rd4+ Kg5 19. Rd5+ Kg6 20. Rd6+ perpetual check) 4. e8=Q Finally, the pawn promotes to a queen. 4... a1=Q 5. Qe4+ Kh2

6. Qh4+ Kg2 7. Qg4+ Kf2 8. Qf4+ Ke2 9. Qe4+ Kd2 9... Kf2 10. Qf4+ Kg2 11. Qg4+ Kh2 12. Qh4+ perpetual check 10. Qd4+! Qxd4 stalemate

Watch this study on a dynamic board! Click here!

(4)
Árpád Rusz
Tarasiuk-50 JT
2017
Special Honourable Mention

White wins

1. Qd4+ e5 2. Nxe5 f6! 3. Nxf6 b1=Q+ 3... h1=Q 4. Nf7# 4. Ka7 Qgb3 4... Qh7 5. Nxh7 Kxh7 6. Qxd7+ Kxh6 7. Ng4+ Kg5 8. Nxh2 +-

5. Qb2!!


Sandwich Theme

5... Qb7+! Domino Theme 5... Q1xb2 6. Ng6#; 5... Q3xb2 6. Nf7#; 5... h1=Q 6. Qxb3 Qxb3 7. Ng6# 6. Qxb7 Qxb7+ 7. Kxb7 h1=Q+ 8. Kb6! The king returns to its initial square after drawing a triangle on the board. 8. Ka7? Qxh6 9. Nf7+ Kg7 10. Nxh6 Kxf6 11. Kb6 a4 =; 8. Kc7? Qh2 =; 8. Kc8? Qa8+ =; 8. c6? Qxc6+! 9. Nxc6 dxc6 10. Kxc6 a4 = 8... Qxh6 9. Nf7+ +-

(5)
Árpád Rusz
Joiţa MT
2018
1st Honourable Mention

White wins

The a4 pawn prevents a simple win (1.Rf4 followed by 2.Ra4#). In order to win, white will try to reach the same position but without the a4 pawn. But how does the "disappearing pawn magic trick" work?

1. Bf3! Logical try: 1. Rf4? Rd6! -+; 1. f3? Rf1! = 1... Rd4 1... Bxf3 2. Rxf3


Saavedra's double attack (echo)

2... Rh1 3. Ra3#; 1... Rd6 2. Rxd6 Bf5+ 3. Rd3! +- 2. Kc3! 2. Bxg4? Rxg4 3. Rxh6 Rg8 4. Ra6 Ra8 = 2... Rxa4 3. Kb3 Bd7! 3... Rd4 4. Bxg4 Rxg4 5. Rc6 Kb1 6. Rxc7 +- 4. Bc6! Rd4 4... Bxc6 5. Rxc6


Saavedra's double attack (echo)

5... Rxa5 6. Rc1# 5. Kc3! 5. Bxd7? Rxd7 6. Rxh6 Rd8 = 5... Rd1 6. Kc2 Bg4 We are back to the initial position but the a4 pawn has disappeared! 6... Rd4 7. Bxd7 Rxd7 8. Rf4! +-


The a4 pawn has disappeared!

7. Rf4! Rd6 8. Ra4#

Watch this study on a dynamic board! Click here!

Related study: Saavedra 1
(6)
Árpád Rusz
Moscow Ty
2018
1st Prize

White wins

1. Kb1 1. g7?? Ra1# 1... Rb2+ 2. Ka1! The king moves to the first corner square. 2... Rxc2 3. g7 Rd2

4. Rh1!! This surprising sacrifice to the second corner is the only way to win. Besides attracting the black king to a worse square, the white rook has the idea of getting to the other side of the yet unborn queen! 4. g8=Q? Rxd1+ 5. Ka2 c2 =; 4. Rxd2+? cxd2 5. g8=Q d1=Q+ =; 4. Rc1? Rd8 =
Thematic try: 4. Rf1? This move also attracts the black king to a worse square, but as we will see, it has the negative effect of blocking the eight rank few moves later. 4... Rd8 (4... Kxf1? 5. g8=Q Rd1+ 6. Ka2 c2 7. Qc4+ +-) 5. Rf8 Rd1+ 6. Ka2 c2 7. g8=Q?? (7. Rc8 =) 7... c1=Q -+

In a QR/QR endgame, the winner is usually the one who gives the first check. Now 8. Qa8+ is impossible, black is going to win!

Let's return to the main line.
4... Rd8 4... Kxh1 5. g8=Q Rd1+ 6. Ka2 c2 7. Qh7+ +- 5. Rh8! This is the third move to a corner square! 5... Rd1+ 6. Ka2 c2 7. g8=Q c1=Q If we compare with the thematic try, here the white rook doesn't block the queen's path to the fourth corner (Loyd Clearance with a peri-anticritical manoeuvre). 7... Ra1+ 8. Kb3! (8. Kxa1? c1=Q+ =) 8... c1=Q 9. Qd5+ +-

8. Qa8+! White completes the task of visiting all corners of the board. 8... Kg3 9. Qb8+ Kg4 10. Qb4+ Qf4 11. Rh4+! +- The game ends with another rook sacrifice.

Tuesday, 4 December 2018

WCCI 2016-18: Daniel Keith (FRA)

(1)
Daniel Keith
XXIII Memorial Z. Birnov
2017
1st Prize

White wins

1. Rg2! 1. Rg1? Bd6+ 2. Kg8 Qc4+ 3. Kh8 Rxc7 4. Rf1+ Bf4 = 1... Bd6+ 1... Rxc7 2. Rf2 +-; 1... Rb2 2. Rg7! +- 2. Kg8 Qc4+ 3. Ne6 3. Kh8? Rxc7 4. Rf2+ Bf4 5. Rxf4+ Qxf4 6. Qe6+ Kg5 = 3... Rb2! 3... Bxc7 4. Rf2+ Ke7 5. Rf7+ Kd6 6. Nxc7 +-; 3... Rxc7 4. Rf2+ Bf4 5. Rxf4+ Qxf4 6. Nxf4 +- 4. Rg7! 4. Rg1? Bxc7 5. Rf1+ Kg6 =; 4. Rf2+? Rxf2 5. Qxf2+ Ke5 =; 4. Rxb2? Qg4+ = 4... Be5

5. Qh4+! Thematic try: 5. Qf1+? Qxf1 6. c8=Q Rb8 7. Rf7+ Kg6 8. Nf8+ Kg5! (8... Kh5? 9. Qe6 +-) 9. Qc2 (9. Qc5 Qe2 10. Qe7+ Kg4 =) 9... Rxf8+! =; 5. Rg6+? Kxg6 6. Qxe5 Rg2! = 5... Qxh4 6. c8=Q Rb8 7. Rf7+ Kg6 8. Nf8+ Kh5 9. Rf5+ 9. Rh7+? Kg5 10. Qc1+ Qf4 11. Qg1+ Qg4 = 9... Kg4 10. Qc4+ Kh3 10... Kxf5 11. Qxh4 +- 11. Qf1+ +-

Watch this study on a dynamic board! Click here!

(2)
Daniel Keith
Moscow Ty
2017
4th Prize

Draw

1. a6 Be3 1... Ra2 2. Kf5 Bb2 (2... Ra5+ 3. Ne5+ Kd4 4. g7 Rxe5+ 5. Kf6 =) 3. Ne5+ Bxe5 4. Kxe5 Rxa6 5. Kf5 Kd4 6. g7 = 2. g7! 2. Kg3? Rc2! 3. Kg4 Ke4! (3... Bd4? 4. Ng5! Rg2+ 5. Kf5 Rf2+ 6. Kg4! Rf6 7. a7! Bxa7 8. Kh5 =) 4. Nd6+ Ke5 -+ 2... Bd4! 2... Rg2+ 3. Kf3! Rxg7 4. Ne5+ Kd2 5. Nc4+ Kd3 6. Ne5+ (6. Nxe3? Rf7+ -+) 6... Kd4 7. a7! (7. Nc6+? Kd5 -+) 7... Rg8 8. Nc6+ Kd3 9. Ne5+ Kd2 10. Nc4+! Kd3 11. Ne5+! Kd4 12. Nc6+ Kd5 13. Ne7+ = 3. Kg3! 3. a7? Ra2 -+; 3. Ne5+? Bxe5 4. a7 Ra2 -+ 3... Rf1

4. Ne5+!! Ke4 4... Bxe5+ 5. Kg2 = 5. a7 Rg1+ 5... Bxa7 6. Ng4 Rg1+ 7. Kh3 = 6. Kh3! 6. Kh2 ? Bxa7 -+ 6... Rh1+! 6... Ra1 7. Kg2! = zz 7. Kg3! 7. Kg4? Ra1! 8. Kh5 Kf5! 9. g8=Q Rh1#; 7. Kg2? Ra1! -+ zz 7... Ra1 8. Kg2! zz


mutual zugzwang

8... Kxe5 8... Rg1+ 9. Kh3 =; 8... Kf5 9. Kf3 = 9. Kf3! 9. Kh2? Bg1+! 10. Kg2 Bxa7 11. g8=Q Rg1+ -+ 9... Rf1+ 10. Ke2 =

Watch this study on a dynamic board! Click here!

(3)
Daniel Keith
Hoch-70 JT
2016
3rd Prize

White wins

1. Rg4!! Logical try: 1. Nf3+? Qxf3+ 2. Rxf3


position B1

2... f6+ 3. Rg6! Bxg6+ 4. Kxh4! Bb1!! (4... Be4? 5. Rf2+ Kg1 6. Kg3 f5 7. Rf4! +- zz) 5. Rf2+ Kg1 6. Kg3 f5 7. Rf3! (7. Rd2 f4+! 8. Kxf4 Bg6! 9. Kf3 Bh5+! 10. Kg3 Kf1! =; 7. Rf4 Be4! zz) 7... Bc2! 8. Rc3 f4+! 9. Kxf4 Ba4! = 1... Qe3! 2. Nf3+! 2. Rxh4+? Kg3! 3. Rg4+ Kh3 4. Rf3+ Qxf3 5. Nxf3 f5+/f6+ =; 2. Rg2+? Kh3 = 2... Qxf3 2... Kh3 3. Ng5+ +- 3. Rxf3


position A1

3... f5+ 4. Kxh4! Logical try 4. Rg6? Bxg6+ 5. Kxh4! Be8! 6. Rf2+ Kg1 7. Kg3


position B2

7... Bd7! 8. Rf3! (8. Rd2 f4+! =; 8. Rf4 Be6 =) 8... Bc8! 9. Rc3 f4+ = 4... fxg4 5. Rf2+ Kg1 6. Kg3


position A2

6... Bg6 6... Ba4 7. Ra2 +- 7. Rf8 Bh7 8. Rh8 Bg6 9. Rh6 +-

Watch this study on a dynamic board! Click here!

(4)
Daniel Keith
Internet (kasparovchess.crestbook.com)
2016

Draw

1. Nd4+! 1. f7? Qa1+ 2. Kd2 Qf6 3. Ne5+ Kd6 -+; 1. Ne5+? Kc7! 2. f7 Qf6 3. Kd2 Kd6 -+ 1... Kb7! 1... Kc7 2. f7 Qf6 3. f8=Q Qxf8 4. Ne6+ = 2. f7 Qf6 2... Qa1+ 3. Ke2 = 3. Nd6+! Qxd6 3... Kb6 4. N4f5 =

4. Kd1!! Qf6 4... Qd8 5. Ne6 = 5. Ne6 Qxf7 6. Nd8+ =

Watch this study on a dynamic board! Click here!

(5)
Daniel Keith
e4e5
2018

White wins

1. Kg5 Qb5! 1... Qe8 2. Kg4 Qg8+ (2... Qa4+ 3. Kg3 Qd1 4. Ba2+ Kxe5 5. Rc5+ Kf6 6. Ne4+ +-) 3. Kf3 Qg1 4. Bd3 Kxe5 5. Rc2 +-; 1... Qb4 2. Bf5+ Kxe5 3. Bh3 Qf8 4. Rd7 Qg8+ 5. Kh4 +-; 1... Kxe5 2. Rc5+ Ke6 3. Bd3 Qb4 4. Bc4+ Kd6 5. Rd5+ Kc6 6. Rd4 +- 2. Ba2+ Kxe5 3. Bc4 f1=Q! 3... Qe8 4. Rc5+! Kd6 5. Rd5+ Kc7 6. Kf4 Qf8+ 7. Kg3 +- 4. Bxf1! 4. Nxf1? Qe8! 5. Rc5+ Ke4 6. Rf5 (6. Rd5 Qg8+ 7. Kf6 Qf8+ 8. Ke6 Qc8+ 9. Kd6 Kf3! = The black king approaches the e3-pawn and White cannot win.) 6... Qg6+! 7. Kh4 Qg4+! 8. Kxg4 stalemate 4... Qd5!

5. Rd7!! 5. Rc8? Ke6+ =; 5. Nc4+? Ke6+ =; 5. Rc2? Qg8+ 6. Kh4 Qh7+ 7. Kg3 Qxc2 -+ 5... Qxd7 5... Qg8+ 6. Kh4 Qh8+ 7. Kg3 +- 6. Nc4+ Ke4 6... Kd5 7. Nb6+ +-; 6... Ke6 7. Bh3+ +- 7. Bg2+ Kd3 8. Ne5+ Kxe3 9. Nxd7 +-

Watch this study on a dynamic board! Click here!

(6)
Daniel Keith
Afek-64 JT
2016
Special Commendation

White wins

1. Kd3! 1. Kb3? Re3+! 2. Kc2 Re2+ 3. Kd1 Re1+! (3... Rd2+? 4. Ke1! Qa5 5. d8=Q+ +-) 4. Kxe1 Qa5+ 5. Kf2 Qd2+ 6. Kf3 Qd1+ =; 1. Kc2? Re2+ 2. Kd3 Rd2+! 3. Kxd2 Qa5+ 4. Ke2 Qxb5+ 5. Kf3 Qf1+ = 1... Qb6! 1... Rd1+ 2. Ke2 (2. Kc2? Rc1+ 3. Kb3 Rc3+! =) 2... Re1+ 3. Kf3! Rf1+ 4. Kg2 Rg1+ 5. Kxg1 +- 2. d8=Q+ Qxd8 3. Nxe6! 3. Qd7+? Qxd7 4. cxd7 Be7 =; 3. Nf3? Kc5+ 4. Qd7 Rd1+! =; 3. Nf7? Rd1+! 4. Ke2 Rd2+! 5. Kf1 (5. Kxd2 Qa5+ 6. Kd1 Qa4+ =) 5... Rd1+ 6. Kg2 Rd2+ 7. Kh3 Rd3+ 8. Kg4 (8. Rg3 Rxg3+ 9. Kxg3 Qc7+ 10. Kf3 Kc5 =) 8... Rd4+ 9. Kh3 Rd3+ = 3... Rxe6! 3... Rd1+ 4. Ke2! (4. Kc2? Rc1+ 5. Kb3 Rc3+! 6. Kxc3 Qa5+ 7. Kd3 Qxb5+ =) 4... Re1+ 5. Kxe1! Qa5+ 6. Kf1 Qxb5+ 7. Kf2! Bc5+ 8. Nxc5 +- 4. c7 4. Qh5+? Kd6 5. Rg7 Re7 = 4... Qe8 4... Re3+ 5. Kc2! +- 5. Rxe6 5. Qh1+? Kc5! 6. Rxe6 Qxb5+! 7. Ke4 Qb7+ 8. Kf4 (8. Kf5 Qxh1 9. c8=Q+ Kd4! +-) 8... Qxc7+! = 5... Qxb5+! 5... Qxe6 6. Qh1+ Kc5 7. Qc6+ +- 6. Ke3 6. Kd2? Qb4+ 7. Ke2 Qg4+ = 6... Bc5+! 6... Bc1+ 7. Kf2! +- 7. Kf4 7. Kf3? Qf1+ = 7... Bd6+ 7... Qc4+ 8. Kg5 Qc1+ 9. Kg6 +- 8. Rxd6+! 8. Kg4? Qa4+! 9. Kh5 Qd1+ = 8... Kxd6

9. c8=N+! Phoenix 9. c8=R? Phoenix Qe5+! 10. Kf3 Qf6+ 11. Kg2 Qg5+ 12. Kh1 Qd5+ =; 9. c8=Q? Phoenix Qc4+ (9... Qe5+ 10. Kg4 Qe4+ 11. Qxe4 stalemate) 10. Qxc4 stalemate 9... Kc5 10. Qe7+ Kd4 11. Qe3+ Kd5 12. Qe5+ Kc6 12... Kc4 13. Nd6+ +- 13. Na7+ +-

Watch this study on a dynamic board! Click here!

(6a)
T. Kok
Limburgsch Dagblad
1937

White wins
Twin B: All pieces are moved 2 squares to the left

Twin A:

1. Ke2 Ke6 2. d8=N+! (2. d8=Q? Qh5+! 3. Qxh5 stalemate; 2. d8=R? Qe5+ 3. Kd1 Qa1+! =) 2... Kd5 3. Qf7+ Ke4 4. Qf3+ Ke5 5. Qh5+ Kd6 (5... Kd4 6. Ne6+ +-) 6. Nb7+ +-

Twin B:

1. Kc2 Kc6 2. b8=R! +-

WCCI 2016-18: Martin Minski (GER)

(1)
Martin Minski
10th WCCT
2016
1st place

Draw

Thematic try: 1. Rxe2? Ra8+ (or 1... a2 2. Rxa2 Ra8+)
A. 2. Na7 Rxa7+ 3. Kb3 a2 4. Rxa2 Rxa2 5. Kxa2 h2 6. Rb1 Ng1


position B1

7. Rb8 Kg7/Kh7 8. Rb7+ Kg6 9. Rb6+ Kg5 10. Rb5+ Kg4 11. Rb4+ Kg3 12. Rb3+ Kf2 13. Rb2+ Ne2 14. Rb1 Nc3+ -+

B. 2. Kb3 a2 3. Rxa2 Rxa2 4. Kxa2 h2 5. Rb1 Ng1 6. Nd4 h1=Q -+


position B2

Solution: 1. Re6+!
a. 1... Kh5 2. Rxe2 Ra8+ 3. Na7!! Thematic try: 3. Kb3? a2 4. Rxa2 Rxa2 5. Kxa2 h2 6. Rb1 Ng1


position B3

7. Nd4 h1=Q -+


position B4

3... Rxa7+ 4. Kb3 a2 5. Rxa2 Rxa2 6. Kxa2 h2 7. Rb1! 7. Rb8? Kg4! 8. Rh8 Nh4 -+ 7... Ng1


position A1/A3/A5

8. Rb8! Kg4 8... Kg6 9. Rh8 = 9. Rg8+ = 9. Rh8? Nh3 -+

b. 1... Kg5 2. Rxe2 Ra8+ 3. Kb3! Thematic try: 3. Na7? Rxa7+ 4. Kb3 a2 5. Rxa2 Rxa2 6. Kxa2 h2 7. Rb1 Ng1 -+


position B5

3... a2 4. Rxa2 Rxa2 5. Kxa2 5. Nd4? Rf2! -+ 5... h2 6. Rb1 Ng1 7. Nd4! h1=Q


position A2/A4

8. Rxg1+! Qxg1 9. Nf3+ =

c. 1... Kh7 2. Re7+! Thematic try: 2. Rxe2? Ra8+ (2... a2) 3. Kb3 a2 4. Rxa2 Rxa2 5. Nd4 Rf2! 6. Nxf3 Rxf3+ 7. Kc2


position B6

Kg6/Kh6 -+ 2... Kh8 3. Rxe2 Ra8+ 4. Kb3 a2 5. Rxa2 Rxa2 6. Nd4! Rf2 6... h2 7. Nxf3 h1=Q 8. Rh4+ Qxh4 9. Nxh4 = 7. Nxf3 Rxf3+ 8. Kc2! =


position A6

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(2)
Martin Minski
The Problemist
2016
1st Prize

Draw

1. Ra2! 1. Ne6+? Kf7! (1... Kg8? 2. Ra2 Qb8 3. Ba7! Nxa7 4. Na6 Qa8 5. Nac7 Qb8 6. Na6 =) 2. d8=Q Rxd8 3. Nxd8+ Qxd8 -+ 1... Qb8 2. Ba7! 2. Na6? Bxa6 -+ 2... Nxa7 3. Na6 Qa8 4. Nc7 4. Ne6+? Kf7 5. d8=Q Rxd8 6. Rxb7+ (6. Nxd8+ Qxd8 7. Rxb7+ Kxf6 -+) 6... Rd7 -+ 4... Qb8 5. Na6 Rg1+ 6. Rg2! 6. Kh3? Bg2+ -+; 6. Kh2? Nf3+ -+; 6. Kf2? Nd3+! 7. Kxg1 Qg3+ -+ 6... Rxg2+ 7. Kh3 Rh2+! 8. Kg3! Rh3+! 8... Qd6 9. d8=Q+ Qxd8 10. Ne6+ Kg8 11. Nxd8 Rg2+ 12. Kh3 =; 8... Nxd7+ 9. Nxb8 = 9. Kxh3 Bg2+! 10. Kxg2 Qa8+ 11. Kg1! 11. Kh2? Kf7! 12. Rb7 Kg6 -+; 11. Kf2? Kf7! 12. Rb8 Qf3+! -+ 11... Nxd7 12. Rb8+! 12. Ne6+? Kf7! 13. Rb8 Qd5! 14. Rf8+ Nxf8 -+; 12. Nc7? Qc8! -+ 12... Nxb8 13. Ne6+ Kg8 14. f7+! 14. Nac7? Qf3! 15. f7+ Qxf7 -+ 14... Kxf7 15. Nac7! =


domination

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(3)
Martin Minski
Boris Ilyich Oleynik-82 MT
2017
1st Prize

White wins

1. g7! Rh4+ 2. Kd5 Qd1+! 3. Bd3! Nxd3 4. Ra5! Ne5+! Switchback 4... Nf4+ 5. Kc6+ +- 5. Kxe5 Qe1+ Switchback

6. Qe2+!! 6. Kf6+? Qxa5 7. Qf3+ Rg4 8. g8=Q Qa1+ 9. Ke7 Qa7+ = 6... Qxe2+ 7. Kf6+ Kh6 7... Kg4 8. g8=Q+ +- 8. g8=N#

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(4)
Martin Minski
43rd World Chess Olympiad
2018
2nd Prize

Draw

1. Qh5! 1. Bh2? Qe3+ -+; 1. Bf4? Qxf4 -+ 1... Qxh5 2. h8=Q Bh7! 2... Qg4 3. Qh2+ Bg2+ 4. Qf4 Qd7+ 5. Bd6 exd6 6. Qe3+ = 3. Bf4 Kf2! 3... Kf3 4. Qe5 = 4. Qf8! 4. Qe5? Qd1+ 5. Bd2 Qxd2# 4... Qg4

5. Qf6!! 5. Ke5? Qe2+ 6. Be3+ Kxe3 -+ 5... Kf1! 5... Bb1 6. Qg5 Qd1+ 7. Bd2 = 6. Qf8! Logical try: 6. Qf7? Bg6! 7. Qf8 Kf2! 8. Qf6! Qd1+! 9. Bd2+ Ke2! 10. Qxe7+ (10. Qxg6 Qxd2+ 11. Ke5 Qe3+ 12. Qe4 Qxe4+ 13. Kxe4 Kd2 14. Kd4 Kc2 -+) 10... Kxd2 -+


position X

6... Kf2 6... Bb1 7. Ke5 Qe2+ 8. Be3+ =; 6... Kg2 7. Qh6! Qd7+ 8. Bd6! e5+! 9. Ke3! = 7. Qf6! 7. Qh6? Qd7+ 8. Bd6 e5+! 9. Kxe5 Qf5+ 10. Kd4 Qe4#

The study ends with three variations all featuring ideal pin stalemates:

a. 7... exf6 stalemate;


stalemate

b. 7... Qd7+ 8. Bd6+ exf6 stalemate


stalemate

c. 7... Qd1+ 8. Bd2+ Ke2 8... exf6 stalemate


stalemate

9. Qxe7+ Kxd2


position X'

10. Qxh7 Qg1+ 11. Ke5 Qxc5+ 12. Ke6 =

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(4a)
G. Kasparyan
Shakhmaty v SSSR
1935

Draw (BTM)

1... Bg4+ 2. Kd2! b2 3. d7! Nb3+ 4. Ke1! (4. Kc3? b1=N+! 5. Kc2 Bd1+ -+) 4... b1=Q+ 5. Bc1 Qe4+ (5... Rb8 6. d8=Q+ Rxd8 7. Qf8+ Rxf8 stalemate) 6. Be3 Qh1+ (6... Rb8 7. d8=Q+ Rxd8 8. Qf8+ Rxf8 stalemate) 7. Bg1 Qh4+ (7... Rb8 8. d8=Q+ Rxd8 9. Qf8+ Rxf8 stalemate) 8. Bf2 Qh1+ 9. Bg1 Qe4+ 10. Be3 Qb1+ 11. Bc1 positional draw - perpetual stalemate

(4b)
G. Kasparyan
Shakhmaty v SSSR
1935

Draw

1. f7 e2 2. f8=Q e1=Q 3. Qf3+ Kh2 4. Nf2! Be2 5. Kh4!! (5. Ng4+? Kg1 -+) 5...Qb4+ (5... Bxf3 stalemate) 6. Ne4 Qe7+ (6... Bxf3 stalemate) 7. Nf6 Qb4+ (7... Bxf3 stalemate) 8. Ne4 Qe1+ 9. Nf2 positional draw - perpetual stalemate

(5)
Martin Minski
StrateGems
2016
1st Prize

White wins

1. Rb6! 1. bxc4?? Rd8# Rxb6 1... Rd8+ 2. Kb7 Rd7+ 3. Kc8 +- 2. Qxe7 Re5! 2... Rd7 3. Qxd7 Bg8 4. Qb7! Rxb3 5. Qb8 +- zz see mainline

3. Qd8+! Logical try: 3. Qxe5? Bg8! zz 4. Qb8 Rxb3 zz 5. Qxb3 Bxb3 6. Kb8 Bd5 = 3... Re8! 3... Bg8 4. Qxb6 +- 4. Qxe8+ Bg8 5. Qe5! zugzwang for Black 5. Qb8? Rxb3 = zz; 5. Qd8? Rb8+! 6. axb8=Q stalemate 5... Rb4! 5... Rxb3 6. Qb8 +- zz 6. Qd6! 6. Qb8? Rxb3 = zz 6... Rxb3 6... Rb5 7. b4! Bd5+ 8. Qxd5 +- 7. Qb8! zz


mutual zugzwang

7... Rxb8+ 7... Ra3 8. Kb7 Rxa7+ 9. Qxa7 +- (9. Kxa7? stalemate) 8. axb8=N! 8. axb8=Q? stalemate; 8. Kxb8? Bd5 = 8... Bd5+ 9. Ka7 +-

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(6)
Martin Minski
Chess Informant-50 AT
2016
2nd Prize

White wins

1. f6+ 1. Qc3+? Kg8 2. Kd6 e1=Q 3. Be6+ Qxe6+ 4. Kxe6 (4. fxe6 Qxg2 =) 4... Qxg2 5. Qc7 Qa8 6. Qf7+ Kh8 = 1... Kh8 2. g6! e1=Q+ 2... Bc4+! 3. Qxc4 e1=Q+ 4. Kf7 +- see mainline 3. Kf7 Bc4+! 3... Qh5 4. Qb8 +- 4. Qxc4 Qe8+! 4... Qh5 5. Be6! +- 5. Kxe8 Qe1+

6. Qe2!! 6. Qe6? Qxe6+! 7. Bxe6 stalemate; 6. Be6? Qxe6+! 7. Qxe6 stalemate; 6. Kf7? Qe8+/Qe7+! 7. Kxe8 stalemate 6... Qxe2+ 7. Kf8 Qxg2 8. g7+ Kh7 9. Bb7! 9. Bf5+? Kh6 10. g8=Q Qa8+ 11. Ke7! Qa3+! -+ (11... Qxg8? 12. f7 +-); 9. Be6? Qa8+ = 9... Qg1 9... Qg6 10. Be4! Qxe4 11. g8=Q+ +-; 9... Qxb7 10. g8=Q+ +-; 9... Qg4 10. Be4+ Kh6 11. g8=Q Qc8+ 12. Ke7! +- see mainline 10. Be4+ Kh6 11. g8=Q Qc5+ 12. Ke8 12. Kf7? Qc4+! 13. Ke7 Qxe4+ = (13... Qxg8? 14. f7 +-) 12... Qc8+

13. Ke7!! 13. Kf7? Qd7+/Qc4+= 13... Qxg8 13... Qc7+ 14. Ke6 Qc4+ (14... Qf7+ 15. Kxf7 +- (15. Qxf7? stalemate)) 15. Bd5 +- 14. f7 Qg7 15. Ke8 +-

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