WINTON BRITISH CHESS SOLVING CHAMPIONSHIP

2010-2011 – The Final Problems and Solutions

Note: In these solutions, those moves that were required are given in bold type. All else is given for the sake of completeness and for the interest of solvers. The symbol 'S' is used for knight and threats are given in parentheses.

1.1

Mate in 2

This problem was original and unpublished and so can’t be reproduced here until after it has been published.

1.2 Gilbert S Dobbs

1st Prize, Good Companions (February), 1915

Mate in 2

1.Rc3!                  (5)
           ()	
1...S~     2.R(x)f3#	
1...Qe3    2.Rxe3#	
1...Qd4    2.Bxd4#	
1...Qxc3   2.Qxc3#	
1...Qe2    2.Re3,Rf3#	
1...Qc5    2.Rxc5,Rf3#	
1...Q else 2.Rf3#	
1...d5     2.Rc6#

1.3 Lars Larsen

2nd HM., BCF Ty. No. 128, 1971-1972

8/6sS/2PP1R2/1Bpk1p1p/1P2S3/2BpQ3/KPP2p1q/4s3

Mate in 2

1.Shg5?  (2.Qxc5#) 1...Se6!
1.Re6?   (2.Sef6#) 1...Se8!
1.Sxc5?  (2.Qd4#)  1...Qf4!
1.Seg5?  (2.Qxc5#) 1...Qxd6!
1.Sd2?   (2.Qxc5#) 1...Qxd6!
1.Sxf2?  (2.Qxc5#) 1...Qxd6!
1.cxd3?  (2.Qxc5#) 1...Se6!
		
1.Be5!            (5)
         (2.Sc3#)	
		
1...Kxe5 2.Sc3#	
1...Qxe5 2.c4#	
1...fxe4 2.Qxc5#	
1...cxb4 2.Qd4#

2.1 Thomas C D Ricketts

4th Prize, BCF Ty. No. 117, 1967-1968

4s2r/4p2s/p3Sp2/K3pk1P/4RBp1/3p1p2/B3P3/4Q3

Mate in 3

1.Bxe5!                             (1)
         [2.Qg3       (3.Qf4,Qxg4#) (1)
                 fxe5 3.Qxe5#]	
				
1...Kxe4 2.exf3+ Kxf3 3.Bd5#        (½)
                 Kf5  3.Qe4#	
1...fxe2 2.Qf2+  Kxe4 3.Qf4#        (¼)
1...f2   2.Qxf2+ Kxe4 3.Qf4#        (¼)
1...dxe2 2.Bd4        (3.Rf4#)      (½)
                 Kxe4 3.Qb1#	
1...fxe5 2.Qc3        (3.Qxe5#)     (½)
                 Kxe4 3.Qxd3#	
                 Kf6  3.Rf4#	
1...Sg5  2.Sd4+  Kxe4 3.exf3#       (½)
1...Sd6  2.Rf4+  Kxe5 3.Qc3,Qa1#    (½)

2.2 Valery M Shavirin

Freie Presse, 2000

s4bQ1/6p1/5p2/7p/3RpP1s/4Pk1P/K1p1S1pR/2S3B1

Mate in 3

1.Rc4!                                (1)
        (2.Sd4+ Kg3      3.Sce2#)     (1)
				
1...Sf5 2.Qd5            (3.Qxe4#)    (1)
                Sd4,Sd6  3.Qxh5#	
                Sg3      3.Sd4#	
1...Sg6 2.Qh7            (3.Qxh5#)    (1)
                Sxf4,Se5 3.Qxe4#	
1...Bc5 2.Qe8   &        3.Qxe4,Qxh5# (1)

3.1 Alexey Troitzky

L'Échiquier, 1930

White to play and win

1.Qf6+                    (½)
1...Kh5       2.Qf5+      (½)
2...Kh6       3.Be3+      (½)
3...Kg7       4.Qg5+      (½)
4...Kf8 (i)   5.Bc5+      (½)
5...Bd6       6.Qe5!      (½)
6...Kg8 (ii)  7.Bxd6      (½)
7...Qd8 (iii) 8.Qg3+      (½)
8...Kh8       9.Be5+      (½)
9...f6        10.Qg5! 1–0 (½)

(i)	4...Kh8 5.Bd4+ Be5 6.Bxe5+ Qxe5+ 7.Qxe5+ 1-0
(ii)	6...Qd8 7.Bxd6+ Kg8 has transposed to the main line; 6...f6 7.Bxd6+ 1-0; 6...Qb6 7.Bxd6+ Kg8 8.Qg5+ Kh8 9.Be5+ f6 10.Bxf6+ 1-0
(iii)	7...f6 8.Qe6+ Kg7 9.Bxb8 1-0

3.2 K. Sumbatyan

64, 2003

White to play and win

1.Rg3+                    (½)
1...Kf1! (i)  2.Rxf2+     (½)
2...Kxf2 (ii) 3.Rh3+!     (½)
3...Qxh4      4.Rxh4      (½)
4...Kg3       5.Re4!      (½)
5...Kf3       6.Rxd4!     (½)
6...exd4      7.h6        (½)
7...d3  (iii) 8.h7        (½)
8...d2  (iv)  9.h8Q       (½)
9...d1Q (v)   10.Qh5+ 1–0 (½)

(i)	1...Kh2 2.Rxf2+ Bxf2 3.Bxd8 Kxg3 4.h6 e4 5.h7 Bd4+ 6.Bf6 1-0; 1...Kh1 2.Rh3+ Kg1 (2...Kg2 3.Rxf2+ Kxh3 (3...Bxf2 4.Bxd8 Kxh3 5.h6 e4 6.h7 Bd4+ 7.Bf6 1-0; 3...Kg1 4.Bxd8 Kxf2 5.h6 1-0) 4.Bxd8 e4+ 5.Bf6 1-0) Rg6+ 1-0
(ii)	2...Bxf2 3.Bxd8 Bd4 (3...Bxg3 4.h6 e4 5.Bg5 Be5+ 6.Kg6 Bd4 7.h7 Kf2 8.Kf5 Kf3 9.Bf6 Bxf6 10.Kxf6 e3 11.h8Q 1-0) 4.Bb6 Bxb6 5.Rg4 Kf2 6.Kf6 Kf3 7.Kf5 Be3 8.Re4 Bh6 9.Rxe5 Kg3 10.Re6 Bf8 11.h6 Kf2 12.Rf6 1-0
(iii)	7...Ke2 8.h7 d3 9.h8Q d2 10.Qh5+ note (v)
(iv)	8...Ke2 9.h8Q d2 10.Qh5+ as note (v)
(v)	9...Ke2 10.Qh5+ Ke1 11.Qh1+ Ke2 12.Qe4+ Kf1 13.Qd3+ Ke1 14.Qe3+ Kd1 15.Kf6 Kc2 16.Qe2 Kc1 17.Qc4+ Kb1 18.Qb3+ Kc1 19.Qc3+ Kd1 20.Ke5 Ke2 21.Qc2 Ke1 22.Qe4+ Kf1 23.Qf3+ Ke1 24.Qe3+ Kd1 25.Kd4 Kc2 26.Qc3+ Kd1 27.Ke3 1-0

4.1

Helpmate in 2

This problem was original and unpublished and so can’t be reproduced here until after it has been published.

4.2

Helpmate in 4
2 solutions

This problem was original and unpublished and so can’t be reproduced here until after it has been published.

5.1 Johann N Berger

Neue Berline Schachzeitung, 1866-1867

Mate in 4

1.Rf7!                                           (1)
        [2.Bf3      (3.Qe4+ Kd6  4.Sc8,Sc4,Rd7#) (½)
               Bd4  3.Qd5+  Sxd5 4.Sc4#          (¼)
               Sd4  3.Qxc5+ Sd5  4.Qxd5#         (¼)
                            Ke6  4.Qe7#	
               Sg5  3.Qxc5+ Sd5  4.Qxd5#         (¼)
                            Ke6  4.Qe7#	
               Kd6  3.Sc8+  Ke5  4.Qe4#]         (¼)
						
1...Kd6 2.Qd5+ Sxd5 3.Sc4+  Kc6  4.Ba4#          (½)
1...Bd4 2.Qd5+ Sxd5 3.Sc4+  Ke4  4.Bc2#          (½)
1...Sf4 2.Sd7+ Kd6  3.Qxc5+ Ke6  4.Re7#          (½)
1...Sd4 2.Sd7+ Ke4  3.Bc2+  Ke3  4.Qd3#          (½)
               Kd6  3.Qxc5+ Ke6  4.Re7#          (½)

5.2 Alessandro Cuppini

1st Prize, Kozatska Shakhinitsya, 2004

1b4Qs/2qp1p2/3P1PsS/8/1Rb2P2/r4kp1/3PRpS1/5B1K

Mate in 4

1.Re8!                                    (1)
        (2.Be2+ Bxe2 3.Sh4+  Sxh4 4.Qg4#) (1)
						
1...Be6 2.Sh4+  Sxh4 3.Qg4+  Bxg4 4.Be2#  (1)
1...Se5 2.Qg4+  Sxg4 3.Be2+  Bxe2 4.Sh4#  (½)
                Ke4  3.Rxe5+ Kd4  4.Sf5#  (½)
1...Se7 2.Qg4+  Ke4  3.Qf5+  Kf3  4.Sh4#  (1)
                             Kd4  4.Qe5#

6.1 John Rice

Original for WCBCSC

Selfmate in 2

1.Qb2!                  (½)
         (2.Qb3+ Bxb3#) (½)
			
1...Bb3+ 2.Qc2+  Bxc2#  (1)
1...Sxf3 2.Qd4+  Sxd4#  (1)
1...Se4  2.Be2+  Qxe2#  (1)
1...Rxf3 2.Sf2+  Rxf2#  (1)

6.2 Valery Kopyl & Gennady Kozyura

1st Prize, Borodavkin-40 JT, 2010

3B4/2PP1P2/R1p2S2/P1k5/2B5/2PQp3/1PP1P2p/3K2Sr

Selfmate in 5

1.b3!     ()                                               (1)

1...hxg1B 2.Rxc6+ Kxc6 3.c8R+ Kb7 4.a6+  Ka7 5.Qxe3+ Bxe3# (2)
1...hxg1S 2.Qd6+  Kxd6 3.f8Q+ Ke5 4.Sg4+ Ke4 5.Qf3+  Sxf3# (2)

WINTONBRITISH CHESS SOLVING CHAMPIONSHIP

2010-2011 – The Final Problems and Solutions

WINTON
BRITISH CHESS SOLVING CHAMPIONSHIP