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+ +-

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(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

Watch this study on a dynamic board! Click here!

(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

Watch this study on a dynamic board! Click here!

(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#

Watch this study on a dynamic board! Click here!

(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 =

Watch this study on a dynamic board! Click here!

(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 +-

Watch this study on a dynamic board! Click here!

(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 +-

Watch this study on a dynamic board! Click here!

Monday, 3 December 2018

WCCI 2016-18: Peter Krug (AUT)

(1)
Peter Krug
3rd UAPA Bicentennial
- Win Section -
2016
1st Prize

White wins

1. c8=N! 1. c8=Q? Ra7+! 2. Kc6 Rxg7 3. Qh3+ (3. Qh8+ Kg6 =) 3... Bh4 = 1... Rxc8 2. Kxc8 Nd6+ 3. Kd7 Ne4 4. Ke6! 4. Ke7? Bh4+ 5. Kf8 Nf6= 4... Ng5+ 5. Ke7! 5. Kf6? Be5+! 6. Kxe5 Nf7+ 7. Kf6 Nh6 = 5... Bd6+

6. Kd7! 6. Kxd6? Nf7+ = 6... Ne4 7. Ke6 Ng5+ 8. Kf5 Nf7 9. g4+! 9. g8=Q? Nh6+ = 9... Kh4 10. g5! +-

Watch this study on a dynamic board! Click here!

(2)
Peter Krug
4th UAPA
- Section B1 -
2016
4th Prize

White wins

1. Ngf5! 1. Nef5? Qa7+ 2. Kxa7 Rxa5+ 3. Kb7 Rxd5 4. Ne6+ Kf7! = 1... Qa7+! 1... Rb1+ 2. Ka8 Ke8 3. Rh8+ Kd7 4. Rh7 Qe2 5. Nc6+ Ke8 6. Nd6+ Kf8 7. Rf7+ +- 2. Kxa7 Rxa5+

3. Kb7!! Thematic try : 3. Kb6? Rxd5 4. Ng6+ Kf7 5. Nh6+ Ke8 6. Rxd5 d1=Q 7. Re5+ Kd7! 8. Nf8+ Kc8! = 3... Rxd5 3... Rb5+ 4. Kc6 Rxd5 5. Ng6+ Kf7 6. Nh6+ Ke8 7. Rxd5 d1=Q 8. Re5+ +- 4. Ng6+ Kf7 5. Nh6+ Ke8 6. Rxd5 d1=Q 7. Re5+! 7. Rxd1? stalemate 7... Kd7 8. Nf8+ Kd8 8... Kd6 9. Nf7# 9. Nf7#

Watch this study on a dynamic board! Click here!

(3)
Peter Krug
StrateGems
2017
1st-3rd Prize

White wins

1. Rh3! Bd7! (1... Rxf4 2. Bh7+! Kf8 3. Nhg6+ Bxg6 4. Nxg6+ Kf7 5. Qxe7#; 1... Qc8 2. Nf5 Rxf5 3. Bh7+ Kf8 4. Bxf5 Qxf5 5. Rh8#) 2. Bh7+! Kxh7 3. Qe4+! Kg8 4. Qc4+/Qd5+ Kh7 (4... Be6 5. Nhg6 +-)

5. Qe6!! Rb1+ (5... Rxf4 6. Nhf3+ Bh4 7. Ng5+ Kh8 8. Ng6#; 5... Bxe6 6. Nf5+ Kg8 7. Nxe7#) 6. Kh2 Rh1+! 7. Kxh1 Qb1+ 8. Kh2 Qg1+! 9. Kxg1 Bc5+ 10. d4! Bxe6 11. f5! Bxd4+ 12. Kh1 Bxe5 13. Ng6+ Kg8 14. Rh8+ Kf7 15. Rxf8#

Watch this study on a dynamic board! Click here!

(4)
Peter Krug
Phenix
2017
2nd Prize

White wins

1. Rh6+! (1. Qxe2? Qc4+ 2. Kf5 Rd5+ 3. Ke6 Rd3+ 4. Kf5 Rd5+ perpetual check) 1... gxh6 (1... Kg8 2. Qxe2 Qc4+ 3. Kf5 Rd5+ 4. Kg6 +-) 2. Kf7! (2. Qxe2? Qc4+! 3. Kf5 Rd5+ 4. Kg6 Rxg5+ 5. Kxh6 Qg8 6. Qe7 (6. Rf8 Rg6+ 7. Kh5 Rg5+ 8. Kh4 Rxg4+ 9. Qxg4 Qxf8 10. Bd4+ Kh7 =) 6... Qg6+! 7. Rxg6 Rh5+! 8. Kxh5 stalemate) 2... Qxe4 (2... Qb3+ 3. Be6 Qxe6+ (3... Rd7+ 4. Kg6 Rg7+ 5. Kxh6 +-) 4. Qxe6 Rxe6 5. Rxe6 Rd7+ 6. Kg6 +-) 3. Rxh6+ Qh7+ 4. Rxh7+ Kxh7 5. Bf5+ Kh8 6. g6! (6. Bxd3? Rf2+!/Re4! 7. Bxf2 g1=Q 8. Bxg1 stalemate) 6... Rd7+ (6... Re7+ 7. Kxe7 Rd1 8. Kf7! (8. Kf8?! Rd8+ 9. Kf7? (9. Ke7 Rd1 10. Kf7) 9... Rf8+! 10. Ke6 Kg7 =) 8... Rd7+ 9. Kf6 Rf7+ 10. Kg5 +-) 7. Bxd7 Rf2+ 8. Bxf2 g1=Q 9. Bh4 (9. Bf5? Qa1/Qg4 =) 9... Qg5

10. Bf5! Qxh4 (10... Qxf5+ 11. Bf6+ Qxf6+ 12. Kxf6 Kg8 13. g7 +-) 11. g7#

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(5)
Peter Krug
5th UAPA
- Section B1 -
2017
3rd Prize

White wins

1. Rc8+! Qxc8 2. Qh5 2. Qh4? Rf6 3. d7 Qa8+ 4. Kh2 Qb8+ 5. Kh3 Qa8! = 2... Rf6 2... Qa8 3. Qe5+ Rf6+ 4. Bd5 Qf8 5. d7 +- 3. d7 Qf8 4. Nd6! exd6 4... Rf1+ 5. Bxf1 Qxf1+ 6. Kh2 Qf2+ 7. Kh3 +- 5. Qh4! 5. Qe8? Rh6+ 6. Kg2 Rg6+ = 5... Qe7 5... a3 6. Bd3 Rh6 7. d8=Q Qxd8 8. Qxh6 Qe7 9. Bc4 Qb7+ 10. Kg1 Qb1+ 11. Kf2 Qf5+ 12. Ke3 Qe5+ 13. Kd2 Qd4+ 14. Bd3 +- 6. Kh2 Kg7 6... d5 7. Bd3 +-; 6... a3 7. Bd3 h6 8. Qd4 +- 7. Qg5+ Kh8

8. Qg8+! Kxg8 9. d8=Q+ Qxd8 10. e7+ +-

Watch this study on a dynamic board! Click here!

(6)
Peter Krug
Die Schwalbe
2018

White wins

1. Rb2! Nf3 2. Bc5 a3! 3. Ra2 Nd4

4. Ke7!! Thematic try: 4. Kf7? Nb5 5. Rc2 a2 6. Rxa2 Nc3! 7. Rc2 Ne4 8. Be3 Ng3 9. Ba7 Ne4 10. Bb8

10... Ng5+! 11. Kg6 Nf3 12. Ba7 Nd2 13. Kf5 Kg2 14. Rxd2+ Kh3 =; 4. Kd7? Nb5 5. Rc2 a2 6. Rxa2 Nd4! =; 4. Bb6? Nb5 5. Rc2 a2 6. Rxa2 Nd4! =; 4.Bxd4? stalemate 4... Nb5 5. Rc2/Rd2 a2 6. Rxa2 Nc3 6... Nd4 7. Kf6 Ne2 8. Bd6 +- 7. Rc2 Ne4 8. Be3! 8. Ba7? Nd2 9. Bb8 Nf3 = 8... Ng3 9. Ba7! 9. Bb6? Nf5+ 10. Kf6 Ne3 = 9... Ne2 9... Ne4 10. Bb8 +-; 9... Nf5+ 10. Kf6 +- 10. Bb8 Kg1 11. Bxh2+ +-

Watch this study on a dynamic board! Click here!

(6a)
J. Bandres
Ocho X Ocho
1990
- correction (Rusz, 2018) -

White wins

1. Rh4! 1. Rg4? Nd1! 2. Rg1 Kb2 3. Be6 Nc3 4. Rg2+ Kb1 5. Bf5+ Ka1 6. Kf7 a2 7. Ke6 Ne2! 8. Rxe2 stalemate 1... Nd1! 1... a2 2. Rh1+ +- 2. Rh1 Kb2 3. Bc4! Nc3 4. Rh2+ Kb1 5. Bd3+ Ka1! 5... Kc1 6. Rc2+ +- 6. Kf7 a2 7. Ke6 Ne4! 7... Ne2 8. Bxe2 Kb1 9. Bd3+ Ka1 10. Bc4 +- 8. Kd5 8. Bxe4? stalemate 8... Nd2! 9. Bc4! Nxc4 10. Kxc4 Kb1 11. Kb3 +-

The author's initial position was this: wKg8,Bb3,Rc5/bKb1,Nf2,Pa3 +-
1.Rh5! (but 1. Bd5/Be6/Bf7 also wins)