MESON Chess Problem Database
Problem Display
PID: 144789 (3R4/6K1/1Q4B1/p1NPp2p/r2knn1R/1P1N3p/3P3b/7b w - - 0 1)
Spencer Palmer, RL
Chess, 1954
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Sxd2
- 2.Sxa4#
- 1...Sf2
- 2.Sxa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sc3
- 2.Sxa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sg3
- 2.Sxa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sxc5
- 2.Qxc5#
- 1...Sg5
- 2.Sxa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sf6
- 2.Sxa4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sg2
- 2.Rxe4#
- 1...Sxd3
- 2.Se6#
- 1...Se6+
- 2.dxe6#
- 1...Sxd2
- Tries
- 1.Sc1?
- threat
- 2.Sxe4#
- 2.Se6#
- 1...Se6+
- 2.Sxe6#
- 2.dxe6#
- 1...Sxd2
- 2.Sxa4#
- 2.Se4#
- 1...Sxc5
- 2.Se2#
- 1...Rb4
- 2.Se6#
- 1...Rc4
- 2.Se6#
- 1...Sf2
- 2.Se2#
- 2.S5d3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sc3
- 2.S5d3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sg3
- 2.S5d3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sg5
- 2.Se2#
- 2.S5d3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sf6
- 2.Se2#
- 2.S5d3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sd3
- 2.Se2#
- 2.S5xd3#
- 2.Se6#
- 1...Sd6!
- threat
- 1.Se1?
- threat
- 2.Sc2#
- 2.Sxe4#
- 2.Se6#
- 1...Se6+
- 2.Sxe6#
- 2.dxe6#
- 1...Sxd2
- 2.Sxa4#
- 2.Se4#
- 1...Sxc5
- 2.Sc2#
- 1...Ra2
- 2.Sxe4#
- 2.Se6#
- 1...Rb4
- 2.Sc2#
- 2.Se6#
- 1...Rc4
- 2.Se6#
- 1...Sf2
- 2.Sc2#
- 2.Scd3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sc3
- 2.Sc2#
- 2.Scd3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sg3
- 2.Sc2#
- 2.Scd3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sg5
- 2.Sc2#
- 2.Scd3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sf6
- 2.Sc2#
- 2.Scd3#
- 2.Sxa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Sb7#
- 1...Sd3
- 2.Sc2#
- 2.Scxd3#
- 2.Se6#
- 1...Sd6!
- threat
- 1.Sxa4+?
- 1...Sc5
- 2.Qxc5#
- 1...Kxd3!
- 1...Sc5
- 1.Sa6+?
- 1...Sc5
- 2.Qxc5#
- 1...Kxd3!
- 1...Sc5
- 1.Sb7+?
- 1...Sc5
- 2.Qxc5#
- 1...Kxd3!
- 1...Sc5
- 1.Sd7+?
- 1...Kxd5
- 2.Sf6#
- 1...Sc5
- 2.Qxc5#
- 1...Kxd3!
- 1...Kxd5
- 1.Sc1?
- Keys
- 1.Qf6!
- threat
- 2.Qxe5#
- 1...Se6+
- 2.dxe6#
- 1...Sxf6
- 2.Se6#
- 1...Sxd3
- 2.Se6#
- 1...Sxd5
- 2.Qf2#
- 1...Sxg6
- 2.Qf2#
- 1...Se2
- 2.Qf2#
- 1...Sg2
- 2.Rxe4#
- threat
- 1.Qf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- S(f);N_GUARD,P_SPINS(g),XP(A)::QAB(G)+S(E),XR(d)
- S(f);OGATE,P_SPINS(g),XS(E)::QAB1(G),XS(f)
- S(g);OGATE,P_SPINS(f)::R1(D),XS(f)
- S(g);P_SPINS(f),SBLOCK,XS(C)::QAB(G)+S(E),DCHECK
- S(g);CHECK,OGATE,P_SPINS(f)::R(J)+P(F),XS(g)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- S(f);P_SPINS(g),XS(E)::S(C)
- R(d);::QAB(G)+S(E),DCHECK
- Refutation
- S(f);P_SPINS(g)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- S(f);P_SPINS(g),XS(E)::S(C)
- R(d);::QAB(G)+S(E),DCHECK
- Refutation
- S(f);P_SPINS(g)
- Try
- S(E);CHECK,XR(d)
- Vars
- S(f);N_GUARD,P_SPINS(g)::QAB1(G),XS(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(f),XS(C)
- Try
- S(E);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(g)::QAB1(G),XS(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(f),XS(C)
- Try
- S(E);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(g)::QAB1(G),XS(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(f),XS(C)
- Try
- S(E);CHECK
- Vars
- K(e);P-FLIGHT,XP(F)::R(J)+S(E),DCHECK
- S(f);N_GUARD,P_SPINS(g)::QAB1(G),XS(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(f),XS(C)
- Try
- Actual
- Q(G);P_PINP(i)
- Threat
- QAB1(G),XP(i)
- Vars
- S(g);CHECK,OGATE,P_SPINS(f)::R(J)+P(F),XS(g)
- S(f);N_SPINP(i),P_SPINS(g),XQ(G)::S(E)
- S(g);N_GUARD,P_SPINS(f),SBLOCK,XS(C)::S(E)
- S(g);OGATE,P_SPINS(f),XP(F)::QAB(G)
- S(g);OGATE,P_SPINS(f),XB(H)::QAB(G)
- S(g);OGATE,P_SPINS(f)::QAB(G)
- S(g);OGATE,P_SPINS(f)::R1(D),XS(f)
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).