MESON Chess Problem Database
Problem Display
PID: 16375 (8/5Rpb/5p2/5pNn/3K1kP1/5N2/7P/4Q3 w - - 0 1)
Winn, DL
Chess, 1940
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxg4
- 2.Qh4#
- 1...Sg3
- 2.Qxg3#
- 1...fxg4
- 2.Qe5#
- 1...fxg5
- 2.Qe4#
- 1...Kxg4
- Tries
- 1.Kd3?
- threat
- 2.Qb4#
- 1...Kxg4
- 2.Qh4#
- 1...fxg5
- 2.Qe4#
- 1...Sg3
- 2.Qxg3#
- 1...fxg4+!
- threat
- 1.Rxf6?
- threat
- 2.Qe4#
- 1...Kxg4
- 2.Qh4#
- 1...Sxf6
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...gxf6!
- threat
- 1.Qe5+?
- 1...Kxg4
- 2.h3#
- 1...fxe5+!
- 1...Kxg4
- 1.Kd3?
- Keys
- 1.gxh5!
- threat
- 2.Qg3#
- 2.Qh4#
- 1...Kg4
- 2.Qh4#
- 1...fxg5
- 2.Qg3#
- 2.Qe4#
- threat
- 1.gxh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- K(a);OGATEB,P-FLIGHT,XP(E)::QAR1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- P(b);P_SPINP(d),SBLOCK,XP(E)::QAB1(A)
- P(d);P_SPINP(b),XS(F)::QAR1(A)
- Tries
- Try
- K(D);P-FLIGHT
- Threat
- QAR(A)
- Vars
- K(a);OGATEB,P-FLIGHT,XP(E)::QAR1(A)
- P(d);P_SPINP(b),XS(F)::QAR1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- P(b);CHECK,P_SPINP(d),XP(E)
- Try
- R(G);P_PINP(b),XP(d)
- Threat
- QAR1(A)
- Vars
- K(a);N_SPINP(b),OGATEB,P-FLIGHT,XP(E)::QAR1(A)
- S(c);N_GUARD,N_SPINP(b),XR(G)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- P(e);N_SPINP(b),XR(G)
- Try
- Q(A);CHECK
- Vars
- K(a);P-FLIGHT,XP(E)::P(B)
- Refutation
- P(d);CHECK,P_SPINP(b),XQ(A)
- Try
- Actual
- P(E);XS(c)
- Threat
- DUALS(2)
- Vars
- K(a);P-FLIGHT::QAR1(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).