MESON Chess Problem Database
Problem Display
PID: 51210 (q7/8/3B2N1/8/p1pkP3/2R1R3/3P4/K2Q4 w - - 0 1)
Wigan, TK
Manchester Guardian, 1954
#2
8 + 4
SOLUTION
- SOUND
- Tries
- 1.Sf4?
- threat
- 2.Se2#
- 2.Se6#
- 1...Qd5
- 2.Se2#
- 1...Qc8
- 2.Se2#
- 1...Qe8
- 2.Se2#
- 1...Qg8
- 2.Se2#
- 1...Qxe4!
- threat
- 1.Se5?
- threat
- 2.Sf3#
- 2.Rxc4#
- 1...Qd5
- 2.Sf3#
- 1...Qc6
- 2.Sf3#
- 2.Sxc6#
- 1...Qa6
- 2.Sf3#
- 1...Qc8
- 2.Sf3#
- 1...Qf8
- 2.Sc6#
- 2.Rxc4#
- 1...Qg8
- 2.Sf3#
- 2.Sc6#
- 1...Qxe4!
- threat
- 1.Red3+?
- 1...Kxe4
- 2.Qf3#
- 2.Qg4#
- 1...cxd3!
- 1...Kxe4
- 1.Qxa4?
- threat
- 2.Rcd3#
- 2.Rxc4#
- 1...Qxe4
- 2.Qxc4#
- 1...Qd5
- 2.Rcd3#
- 1...Qc6
- 2.Rcd3#
- 1...Qa6
- 2.Rcd3#
- 1...Qc8
- 2.Rcd3#
- 1...Qg8
- 2.Rcd3#
- 2.Qa7#
- 1...Qxa4+!
- threat
- 1.Qh5?
- threat
- 2.Bc5#
- 2.Qc5#
- 2.Qe5#
- 1...Qxe4
- 2.Bc5#
- 2.Qc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qc6
- 2.Qe5#
- 2.Qh8#
- 1...Qa7
- 2.Qd5#
- 2.Qe5#
- 1...Qc8
- 2.Qd5#
- 2.Qe5#
- 1...Qe8
- 2.Bc5#
- 2.Qc5#
- 2.Qd5#
- 1...Qf8
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Qh8
- 2.Bc5#
- 2.Qc5#
- 2.Qd5#
- 2.Qxh8#
- 1...Qa5!
- threat
- 1.Qf1?
- threat
- 2.Rxc4#
- 2.Qxc4#
- 2.Qf6#
- 1...Qxe4
- 2.Qxc4#
- 1...Qc6
- 2.Qf6#
- 1...Qa5
- 2.Rxc4#
- 2.Qxc4#
- 1...Qa6
- 2.Qf6#
- 1...Qc8
- 2.Qf6#
- 1...Qd8
- 2.Rxc4#
- 2.Qxc4#
- 1...Qe8
- 2.Rxc4#
- 2.Qxc4#
- 1...Qf8
- 2.Rxc4#
- 2.Qxc4#
- 1...Qg8
- 2.Qf6#
- 1...Qh8
- 2.Rxc4#
- 2.Qxc4#
- 1...Qd5!
- threat
- 1.Qg1?
- threat
- 2.Re1#
- 2.Re2#
- 1...Qxe4
- 2.Red3#
- 1...Qf8!
- threat
- 1.Sf4?
- Keys
- 1.d3!
- threat
- 2.dxc4#
- 1...Kxc3
- 2.d4#
- 1...Kxe3
- 2.Bc5#
- 1...Qxe4
- 2.dxe4#
- 1...cxd3
- 2.Qxd3#
- threat
- 1.d3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(d);::S(H)
- Refutation
- Q(d);XP(F)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(d);::S(H)
- Refutation
- Q(d);XP(F)
- Try
- R(E);CHECK
- Refutation
- P(b);XR(E)
- Try
- Q(B);P_PINP(b),P_SPINQ(B),XP(a)
- Threat
- DUALS(2)
- Vars
- Q(d);N_PINQ(B),XP(F)::QAR1(B),XP(b)
- Q(d);N_PINQ(B)::R1(D)
- Q(d);::R1(D)
- Refutation
- Q(d);CHECK,N_SPINP(b),XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(d);N_GUARD::QAR1(B),XQ(d)
- Refutation
- Q(d);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(d);XP(F)::QAR1(B),XP(b)
- Q(d);::QAB(B)
- Refutation
- Q(d);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(d);SBLOCK,XP(F)::QAB(B)+R(E),DCHECK
- Refutation
- Q(d);
- Try
- Actual
- P(C);
- Threat
- QAR(B)+P(C),XP(b)
- Vars
- K(c);OGATE,S_FLIGHT,XR(D)::R(E)+P(C)
- K(c);S_FLIGHT,XR(E)::B(G)
- Q(d);OGATE,XP(F)::QAR(B)+P(C),XQ(d)
- P(b);OGATE,P_SPINP(b),XP(C)::QAR1(B),XP(b)
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).