MESON Chess Problem Database
Problem Display
PID: 63431 (8/8/8/2r3q1/3N3b/3Nk3/2Q2RB1/R3K1B1 w Q - 0 1)
Widdows, TEW
Chess, 1945
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Bxf2+
- 2.Bxf2#
- 1...Bxf2+
- Tries
- 1.Kd1?
- threat
- 2.Re2#
- 1...Kxd4
- 2.Rf4#
- 1...Bxf2
- 2.Bxf2#
- 1...Rxc2!
- threat
- 1.Sc1?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 1...Bxf2+
- 2.Qxf2#
- 1...Qxg2
- 2.Qd3#
- 1...Rxc2
- 2.Sxc2#
- 1...Qf4
- 2.Qd3#
- 2.Qd2#
- 1...Qe7
- 2.Qd3#
- 2.Qd2#
- 1...Qg4
- 2.Qd3#
- 2.Qd2#
- 1...Qd5
- 2.Qd3#
- 2.Qd2#
- 1...Qe5
- 2.Qd3#
- 2.Qd2#
- 1...Qf5
- 2.Qd2#
- 1...Qg6
- 2.Qd2#
- 1...Rc3
- 2.Qe4#
- 2.Qd2#
- 2.Qxc3#
- 1...Re5
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Kxd4!
- threat
- 1.Sb2?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 1...Bxf2+
- 2.Qxf2#
- 1...Qxg2
- 2.Qd3#
- 1...Rxc2
- 2.Sxc2#
- 1...Qf4
- 2.Qd3#
- 2.Qd2#
- 1...Qe7
- 2.Qd3#
- 2.Qd2#
- 1...Qg4
- 2.Qd3#
- 2.Qd2#
- 1...Qd5
- 2.Qd3#
- 2.Qd2#
- 1...Qe5
- 2.Qd3#
- 2.Qd2#
- 1...Qf5
- 2.Qd2#
- 1...Qg6
- 2.Qd2#
- 1...Rc3
- 2.Qe4#
- 2.Qd2#
- 2.Qxc3#
- 1...Re5
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Kxd4!
- threat
- 1.Sb4?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 1...Bxf2+
- 2.Qxf2#
- 1...Qxg2
- 2.Qd3#
- 1...Rxc2
- 2.Sdxc2#
- 1...Qf4
- 2.Qd3#
- 2.Qd2#
- 1...Qe7
- 2.Qd3#
- 2.Qd2#
- 1...Qg4
- 2.Qd3#
- 2.Qd2#
- 1...Qd5
- 2.Qd3#
- 2.Qd2#
- 1...Qe5
- 2.Qd3#
- 2.Qd2#
- 1...Qf5
- 2.Qd2#
- 1...Qg6
- 2.Qd2#
- 1...Rc3
- 2.Qe4#
- 2.Qd2#
- 2.Qxc3#
- 1...Re5
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Kxd4!
- threat
- 1.Sf4?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 1...Bxf2+
- 2.Qxf2#
- 1...Qxf4
- 2.Qd2#
- 1...Qxg2
- 2.Qd3#
- 1...Rxc2
- 2.Sxc2#
- 1...Qe7
- 2.Qd3#
- 2.Qd2#
- 1...Qd5
- 2.Qd3#
- 2.Qd2#
- 1...Qe5
- 2.Qd3#
- 2.Qd2#
- 1...Qf5
- 2.Qd2#
- 1...Qg6
- 2.Qd2#
- 1...Rc3
- 2.Qe4#
- 2.Qd2#
- 2.Qxc3#
- 1...Re5
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Kxd4!
- threat
- 1.Sxc5?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 2.Qc3#
- 1...Bxf2+
- 2.Qxf2#
- 1...Qxg2
- 2.Sf5#
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Qxc5
- 2.Qe4#
- 2.Qd2#
- 1...Qf4
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Qe7
- 2.Sf5#
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Qg4
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Qd5
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Qe5
- 2.Qd3#
- 2.Qd2#
- 2.Qc3#
- 1...Qf5
- 2.Sxf5#
- 2.Qd2#
- 1...Qg6
- 2.Qd2#
- 1...Kxd4!
- threat
- 1.Se5?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 1...Bxf2+
- 2.Qxf2#
- 1...Qxg2
- 2.Sf5#
- 2.Qd3#
- 1...Qxe5
- 2.Qd2#
- 1...Rxc2
- 2.Sxc2#
- 1...Rxe5
- 2.Qd2#
- 2.Qc3#
- 1...Qf4
- 2.Qd3#
- 2.Qd2#
- 1...Qg4
- 2.Qd3#
- 2.Qd2#
- 1...Qf5
- 2.Sxf5#
- 2.Qd2#
- 1...Qg6
- 2.Qd2#
- 1...Rc3
- 2.Qe4#
- 2.Qd2#
- 2.Qxc3#
- 1...Kxd4!
- threat
- 1.Sb3?
- threat
- 2.Qd2#
- 2.Qe2#
- 1...Bxf2+
- 2.Bxf2#
- 1...Qxg2
- 2.Qe2#
- 1...Qg4
- 2.Qd2#
- 1...Qh5
- 2.Qd2#
- 1...Rxc2!
- threat
- 1.Se6?
- threat
- 2.Qd2#
- 2.Qe2#
- 1...Bxf2+
- 2.Bxf2#
- 1...Qxg2
- 2.Qe2#
- 1...Qg4
- 2.Qd2#
- 1...Qh5
- 2.Qd2#
- 1...Rxc2!
- threat
- 1.Qc3?
- threat
- 2.Sxc5#
- 2.Sc2#
- 1...Bxf2+
- 2.Bxf2#
- 1...Qxg2
- 2.Sxc5#
- 1...Qf5
- 2.Sc2#
- 1...Qg6
- 2.Sc2#
- 1...Rc4
- 2.Sc2#
- 1...Ra5
- 2.Sc1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Sc2#
- 1...Rb5
- 2.Sc1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Sc2#
- 1...Rd5
- 2.Sc1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Sc2#
- 1...Re5
- 2.Sc1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Sxe5#
- 2.Sc2#
- 1...Rf5
- 2.Sc1#
- 2.Sb2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Sc2#
- 1...Rc6
- 2.Sc5#
- 2.Sc2#
- 1...Rc7
- 2.Sc5#
- 2.Sc2#
- 1...Rc8
- 2.Sc5#
- 2.Sc2#
- 1...Rxc3!
- threat
- 1.Qc4?
- threat
- 2.Sc2#
- 1...Bxf2+
- 2.Bxf2#
- 1...Rxc4!
- threat
- 1.Kd1?
- Keys
- 1.0-0-0!
- threat
- 2.Re2#
- 1...Kxd4+
- 2.Rf4#
- 1...Rxc2+
- 2.Sxc2#
- 1...Bxf2
- 2.Bxf2#
- threat
- 1.0-0-0!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
- Tries
- Try
- K(B);N_SPINR(E),P-FLIGHT
- Threat
- B(C)+R(E),DCHECK
- Vars
- K(a);S_FLIGHT,XS(H)::B(C)+R(E),DCHECK
- B(b);OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
- Refutation
- R(c);XQ(D)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::QAB1(D),XB(b)
- Q(d);XB(F)::QAR1(D)
- R(c);XQ(D)::S(H),XR(c)
- Q(d);::QAB1(D)
- Refutation
- K(a);S_FLIGHT,XS(H)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::QAB1(D),XB(b)
- Q(d);XB(F)::QAR1(D)
- R(c);XQ(D)::S(H),XR(c)
- Q(d);::QAB1(D)
- Refutation
- K(a);S_FLIGHT,XS(H)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::QAB1(D),XB(b)
- Q(d);XB(F)::QAR1(D)
- R(c);XQ(D)::S(H),XR(c)
- Q(d);::QAB1(D)
- Refutation
- K(a);S_FLIGHT,XS(H)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::QAB1(D),XB(b)
- Q(d);XS(G)::QAB1(D)
- Q(d);XB(F)::QAR1(D)
- R(c);XQ(D)::S(H),XR(c)
- Q(d);::QAB1(D)
- Refutation
- K(a);S_FLIGHT,XS(H)
- Try
- S(G);XR(c)
- Threat
- DUALS(4)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::QAB1(D),XB(b)
- Q(d);::QAB1(D)
- Refutation
- K(a);S_FLIGHT,XS(H)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::QAB1(D),XB(b)
- Q(d);XS(G)::QAB1(D)
- R(c);XQ(D)::S(H),XR(c)
- Q(d);::QAB1(D)
- Refutation
- K(a);S_FLIGHT,XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
- Q(d);XB(F)::QAR1(D)
- Q(d);::QAB1(D)
- Refutation
- R(c);XQ(D)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
- Q(d);XB(F)::QAR1(D)
- Q(d);::QAB1(D)
- Refutation
- R(c);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
- Q(d);XB(F)::QAR(D)+S(G),XR(c)
- Q(d);::S(H)
- R(c);::S(H)
- Refutation
- R(c);XQ(D)
- Try
- Q(D);
- Threat
- S(H)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
- Refutation
- R(c);XQ(D)
- Try
- Actual
- K(B);0-0-0,N_SPINR(E),P_SPINQ(D)
- Threat
- B(C)+R(E),DCHECK
- Vars
- K(a);CHECK,S_FLIGHT,XS(H)::B(C)+R(E),DCHECK
- R(c);CHECK,XQ(D)::S(H),XR(c)
- B(b);OGATE,P_SPINB(b),XR(E)::B(C),XB(b)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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