WINTON BRITISH CHESS SOLVING CHAMPIONSHIP

2009-2010 – The Postal Round 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. Derk H Brummelman

2nd Prize, Tijdschrift vd KNSB, 1958

1q6/4p1B1/1pB5/Q7/5Rp1/rSp1kP1b/P1P1p1s1/2K1R1bS

Mate in 2

1...Sxf4  2.Bd4#	
1...Qxf4  2.Qxc3#	
		
1.Sd2?    (2.Re4#)	
		
1...Sxf4  2.Sc4#	
1...Qxf4  2.Sf1#	
1...cxd2+ 2.Qxd2#	
1...Ra4!		
		
1.Sd4!    (2.Re4#)  (5)
		
1...Sxf4  2.Sf5#	
1...Qxf4  2.Rxe2#	
1...Kxf4  2.Bh6#	
1...Qe5   2.Qxe5#

2. Valery Shavirin

2nd Prize, Freie Presse, 2002

2b1K3/2RpB3/3P3p/3p3r/3k4/4SR2/1S3PQb/1B4r1

Mate in 3

1.Kd8!                                 (½)
          (2.Bf6+ Be5  3.Rf4#          (1)
                 Re5  3.Sf5#)	
				
1...Be5  2.Sf5+  Rxf5 3.Rd3#           (1)
1...Re5  2.Rf4+  Bxf4 3.Sc2#           (1)
                 Re4  3.Bf6#	
1...Rf5  2.Rxf5  &    3.Sc2,Rxd5,Qxd5# (½)
1...Rxb1 2.Qg4+  Bf4  3.Qxf4#          (½)
                 Ke5  3.Sd3#	
1...Ke5  2.Sg4+  Kd4  3.Rd3#           (½)
                 Ke6  3.Rf6#

3. Miroslav Havel

Slovensky narod, 1926

Mate in 3

1.Sf3!                           (1)
         (2.Sd2  &   3.Bb3,Be4#) (1)
				
1...gxf3+ 2.Kxf3    (3.Bb3#)     (1)
                 Kc4 3.Qc5#	
1...d6    2.Qb7+ Ke6 3.d5#       (1)
                 Kc4 3.Qb3#	
1...Sf7   2.Qc5+ Ke6 3.d5#       (1)

4. Fedor Davidenko

1/2 Prize, 64, 2001

s4b1q/3Kpp1p/1p2p1p1/4p1k1/3P2P1/3P4/5RRQ/8

Mate in 4

1.Rg1!                                     (1)
        (2.Rf5+ gxf5 3.gxf5+ Kxf5 4.Qf2#	
                             Kf6  4.Qxe5#	
                exf5 3.gxf5+ Kxf5 4.Qf2#	
                             Kf6  4.Qxe5#) (1)
						
1...h5  2.gxh5+ Kh6  3.hxg6+ Kg7  4.gxf7#  (1)
1...f5  2.gxf5+ Kf6  3.fxg6+ Kg7  4.gxh7#  (1)
1...Bh6 2.Qh5+  gxh5 3.gxh5+ Kxh5 4.Rh2#   (1)
                             Kh4  4.Rh2#

5. Jean-Claude Letzelter

Échecs Artistiques et Humoristiques, 1990

White to play and win

1.Bf1! (i)              (1)
1...Bc6! 2.Bg5          (½)
2...hxg5 3.d8=S!        (½)
3...Bd5! 4.Se6!         (½)
4...Bxe6 5.g7!          (½)
5...Bd5  6.g8=B!! (ii)  (½)
6...Bxg8 7.d7           (½)
7...Bd5  8.d8=R!! (iii) (1)

wins e.g. 8...Bc6 9.Rf8+ 1–0

(i)	1.Bc4? Bc6! 2.Bg5 f1Q+ 3.Bxf1 Kf2+ 4.Bg2 Bxg2#
(ii)	6.g8Q? Kf4+ 7.Qxd5 =
(iii)	8.d8Q? Kf4+ 9.Qxd5 =

6. Yuri Gorbatenko

3rd Prize, Bron MT, 1999

Selfmate in 3

1.Qg6!                              (½)
        (2.Rxf2+ gxf2 3.Qg2+ hxg2#) (½)
					
1...Rf5 2.Qg4+   Sxg4 3.Re3+ Sxe3#  (1)
1...Rg5 2.Qe4+   Sxe4 3.Sd2+ Sxd2#  (1)
1...Sg4 2.Qc6+   Rd5  3.Re3+ Sxe3#  (1)
1...Se4 2.Qh5+   Rxh5 3.Sd2+ Sxd2#  (1)

7. Pavlos Moutecidis & Saturnin Limbach

1st HM., Gazeta Czestochowska, 1985

Selfmate in 7

1.d4    ()                                                                         (1)
										
1...Bc1 2.Se3+ Bxe3 3.Rxe3 b3   4.Qf6+ Rf5 5.Rf3+  Rxf3 6.Qa6+ Rd3+ 7.Sd2+   Kf2#  (2) 
1...Bb2 2.Rxb2 b3   3.Sh4  gxh4 4.Qe6      (5.Sd2+ Kf2+ 6.Qe1+ Rxe1#) 			
                                       Re5 5.Qxe5  h3   6.Sd2+ Kf2+ 7.Qe1+   Rxe1#
                                       OR  5.Sg3+  hxg3 6.Qc4+ Re2  7.g5 or  Kf2#  (2)
                                                                    7.d5 or
                                                                    7.Qd3 or
                                                                    7.Qa6 or
                                                                    7.Qb5 or
                                                                    7.Rxb3

In the 1...Bb2 line, the full marks have been awarded to solvers who gave either the 5.Qxe5 line or the 5.Sg3+ line. In the latter line, only one of the alternatives at move seven needed to be given.

8. A Sachse

4th HM., Schach, 2002-2003 (version)

Helpmate in 7
2 solutions

1.f1=B Rxd2 2.Sb4 Rxb2 3.Kd7 Rxa2 4.Kc6 Rxa3 5.Kb5  Rxb3 6.Ka4 Kb2 7.Bb5 Ra3#  (2½)
1.f1=S Rh3  2.f2  Rxb3 3.Kf7 Kxc2 4.Kg6 Kd3  5.Be4+ Kxe4 6.Kh5 Kf5 7.h3  Rxh3# (2½)

WINTONBRITISH CHESS SOLVING CHAMPIONSHIP

2009-2010 – The Postal Round Problems and Solutions

WINTON
BRITISH CHESS SOLVING CHAMPIONSHIP