Thursday, 9 November 2017

Study 133

Árpád Rusz
Internet (RCS blog)
2017

Draw (DUPLEX)

Although at first glance the initial position seems like a mutual zugzwang, there is a way to achieve draw.
1. Nf2! Thematic try: 1. Ng3? Bxg3 2. Bd8 Bxf4 3. Bf6 Bc1 4. Bxg7+ Kxg7 5. f4 Bxb2+! -+; 1. Be1? Bxe1 2. Nf2 Nc7/Nb6 3. Nh3 Bh4 4. Ng5 Bxg5 5. fxg5 Nb5/Nd5 6. f4 Nc3! 7. bxc3 dxc3 -+ 1... Bxf2 2. Bd8 Be3 3. Bf6! Bc1 3... gxf6 4. exf6 = 4. Bxg7+! Kxg7 5. h8=Q+ 5. h8=R? Bxb2+! -+ 5... Kxh8 6. g7+ Kh7 7. g8=Q+ Kxg8 stalemate

If black is to move in the initial position we have a similar solution. The only move that draws is 1... Nc7! Thematic try: 1... Nb6?

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Thursday, 2 November 2017

Study 37a

V. Vlasenko
Malyshko-105 MT
2017

White wins

Thematic try: 1. Rf8+? Kg2 2. Rg6+ Kh1 3. Rf1+ Qg1 4. Ra1! Qxa1 5. Bxa1 c3+ 6. Kc1 c2 =

With the rook on g6, the g7 square cannot be used as a cutting point to avoid stalemate and there is no time for the critical move Rg6-g8.

Solution: 1. Rf6+! Kg2 2. Rg8+ Kh1 3. Rf1+ Qg1 4. Ra1! 4. Ke2? Qxf1+ 5. Kxf1 stalemate 4... Qxa1 5. Bxa1 c3+ 6. Kc1! mutual zugzwang 6. Bxc3? stalemate 6... c2 This time the rook is already on its right place so the stalemate can be avoided!


pseudo-Indian

7. Bg7! Kg2 8. Be5+ +-

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Related studies: Study 37

Wednesday, 1 November 2017

Study 132

Árpád Rusz
Moscow Ty
2017
1st Prize

White wins

1. Ke4! Kc1! 1... Rh1 2. Rxg2 Rxh3 3. Kxf4 Rh1 4. Rf2 +- 2. Kf3 Rh1 3. Kxg2! f3+! 4. Kxf3 Rxh3+ 4... Kd1 5. Rf2! (5. Re7? Rxh3+ 6. Kg4 Rh7 7. Kf5 Rg7 8. Kf6 Rg6+ 9. Kf5 Rg7 positional draw) 5... Rxh3+ (5... Ke1 6. Kg2! +-)


dual avoidance

6. Ke4! (6. Kg4? Rh7 7. Kf5 Ke1 8. Rf4 Moving to f5 was not possible. 8... Rg7! 9. Kf6 Rg6+! 10. Kf5 Rg7 positional draw) 6... Rh7 7. Ke5! The white king avoids blocking the f5 square. Ke1 8. Rf5! +-


dual avoidance

5. Kg4! 5. Ke4? Rg3! 6. Kf4 Rd3! (6... Kd1? counter-attack 7. Rf2 Rg1 8. Ra2! Rf1+ 9. Ke4! Re1+ 10. Kd3 Re5 11. Ra1#) 7. Rf2 (7. Re7 Rd1! 8. Rxf7 Rf1+ =) 7... Rd2! 8. Rf3 (8. Rxd2 Kxd2 9. Kf5 Ke3 10. Kf6 Kf4 =; 8. Rf1+ Kc2 9. Ke5 Rg2 10. Kf6 Kd3 11. Rf5 Ke4 =) 8... Rd7 9. Ke5 Kd2! 10. Kf6 Rd5! (10... Ke2? 11. Rf5 Ke3 12. Kg7 Ke4 13. Rxf7 Rxf7+ 14. Kxf7 Kf5 15. g6 +-) 11. Rf5 Rxf5+ 12. Kxf5 Ke3 13. Kf6 Kf4 = 5... Kd1! counter-attack 5... Rh7 6. Kf5 Kd1 7. Re5! +-

6. Re6!! Thematic try: 6. Re7? Rh7 7. Kf5 Rg7 8. Kf6 Rg6+ 9. Kf5 Rg7 = Positional draw. Attacking the black pawn with Re7 fails because black has the Rg7 defence. In the main line white will try to attack the black pawn from the opposite direction by bringing its rook to h7. To conquer the h-file, white has to bring its rook to h6 on the shortest way. That is the reason for the surprising sacrifice on e6!; 6. Rf2? Rh7 7. Kf5 Ke1 8. Ra2 Rh3! 9. Kg4 (9. Ra7 Rf3+ 10. Kg4 Rf2! =) 9... Rh7 10. Kf5 Rh3 positional draw; 6. Kxh3? Kxe2 = 6... Rh7! 6... fxe6 7. Kxh3 +-; 6... Rh1 7. Rf6 Rg1+ 8. Kf5 Rf1+ 9. Ke5 Rg1 10. Rf5 Ke2 11. Kf6 +- 7. Rh6! Rg7 7... Rxh6 8. gxh6 +- 8. Kf5 Ke2 9. Kf6 Rg8 10. Rh7! 10. Rh5? Kf3 11. Kxf7 Kg4! = counter-attack 10... Rg6+ 10... Kf3 11. Rxf7 Kg4 12. g6 Kh5 13. Rh7+ +- 11. Kf5 +- In contrast with the thematic try, black has no more the move Rg7 to defend.

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Study 131

Árpád Rusz
Selivanov-50 JT
2017
3rd Prize

White wins

1. d7 Nd5! 1... Ba4 2. Nc6! +-; 1... Bf5 2. Ne6! +- 2. Ne6! Thematic try: 2. Nc6? Nc7+ 3. Kb6 Ne6 (position X') 4. Nd4! Ba4! = 2... Nb4+ 3. Kb6 Nc6!


position X


position X'

If we compare Position X with Position X' from the thematic try, it appears like the two knights were "repainted". This is the only difference between the two positions so the study features the WCCT-10 Theme in an original way!

4. Nd4! 4. Kxc6? Ba4+ = 4... Bf5! Black goes for a stalemate trap! 4... Nd8 5. Nxc2 +- 5. Nxf5 5. Nxc6? Bxd7 = 5... Nb8! 6. d8=B! +- 6. d8=Q? stalemate

The end position has a white bishop and knight vs. a black knight, while in the initial position of the study there was a white knight vs. black bishop and knight. It looks like during the game, paradoxically, all minor pieces were repainted!

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Tuesday, 24 October 2017

Study 130

Árpád Rusz
EG
2017
after Javier Rodriguez Ibran
- version -

White wins

1. Qd3+ Kc1 1... Rd2 2. Qxb1# 2. R7g2 Bh3! 2... Bf5 3. Re2! +- 3. Ba3! Ne3+! 3... Qg4 4. Qc2# 4. Qxe3+ Qd2 5. Qxd2+ cxd2 6. e8=Q d1=Q+ 7. Qe1!


full point zugzwang

7... Qxe1+ 8. Kxe1 Bxg2 9. Rxg2 zugzwang 9... Ra1 10. Bxb2+ +-

Watch this study on a dynamic board! Click here!

The study is based on a 10-man aristocratic full point zugzwang discovered by Javier Rodriguez Ibran (EG130, 1998). AFAIK this is the first study to feature this position.

Monday, 23 October 2017

Study 93

Árpád Rusz
Marwitz-100 MT, 2016
Special Prize
- version -

White wins

Now I prefer this more economical initial position of the Study 93a. 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

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!

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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!!

1st 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 2nd thematic try: 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 = This try failed only because the rook was on the f-file so white will start a manoeuvre to reposition the rook to another file. 23... Kc2 Position X. Now the white king is closer compared to Position X' reached in the 1st 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! Unlike the 2nd thematic try, now that the rook was repositioned from f8, this plan works.27...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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