MESON Chess Problem Database
Problem Display
PID: 16655 (2N5/5p2/3R3p/1Rq1k1rQ/1b3p2/p3P1P1/PnBn3B/4N1K1 w - - 0 1)
Coombes, TA
Kipping, Cyril Stanley
Chess, 1942
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxb5
- 2.exf4#
- 1...Qd5
- 2.Rbxd5#
- 1...Rf5
- 2.Qxf5#
- 2.gxf4#
- 1...Rxh5
- 2.gxf4#
- 1...Bc3
- 2.Rxc5#
- 1...Ba5
- 2.Rxc5#
- 1...Sb1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sb3
- 2.Sf3#
- 1...Sf3+
- 2.Sxf3#
- 1...Sc4
- 2.Sf3#
- 1...fxe3
- 2.g4#
- 1...fxg3
- 2.Bxg3#
- 1...f3
- 2.g4#
- 1...f5
- 2.Qe8#
- 1...f6
- 2.Qe8#
- 1...Qxb5
- Tries
- 1.Qxf7?
- threat
- 2.Qe6#
- 2.Qe8#
- 2.Qxf4#
- 2.Qf6#
- 2.Qe7#
- 1...Sf3+
- 2.Sxf3#
- 1...Qxb5
- 2.Qe6#
- 2.Qxf4#
- 2.Qf6#
- 2.Qe7#
- 2.exf4#
- 1...fxe3
- 2.Qe6#
- 2.Qe8#
- 2.Qf4#
- 2.Qf6#
- 2.Qe7#
- 2.g4#
- 1...fxg3
- 2.Qe6#
- 2.Qe8#
- 2.Qf4#
- 2.Qf6#
- 2.Qe7#
- 1...Sd3
- 2.Qe6#
- 1...Rg4
- 2.Qe6#
- 2.Qe8#
- 2.Qf5#
- 2.Qf6#
- 2.Qe7#
- 1...Rf5
- 2.Qe6#
- 2.Qe8#
- 2.Qxf5#
- 2.Qe7#
- 1...Rg6
- 2.Qxf4#
- 2.Qf5#
- 1...Rg7
- 2.Qe6#
- 2.Qxf4#
- 2.Qf5#
- 2.Qf6#
- 2.Qxg7#
- 1...Rg8
- 2.Qe6#
- 2.Qxf4#
- 2.Qf5#
- 2.Qf6#
- 2.Qe7#
- 1...Se4
- 2.Sf3#
- 2.Qe6#
- 2.Qxf4#
- 1...f3
- 2.Qe6#
- 2.Qe8#
- 2.Qf4#
- 2.Qf6#
- 2.Qe7#
- 2.g4#
- 1...Rxg3+!
- threat
- 1.Qxg5+?
- 1...f5
- 2.Qxf4#
- 2.Qf6#
- 2.Qe7#
- 2.Qxf5#
- 2.Qg7#
- 2.gxf4#
- 1...hxg5!
- 1...f5
- 1.g4?
- threat
- 2.Bxf4#
- 1...Sf3+
- 2.Sxf3#
- 1...Sd3!
- threat
- 1.Qxf7?
- Keys
- 1.Bh7!
- 1...Sf3+
- 2.Sxf3#
- 1...Qxb5
- 2.exf4#
- 1...Rxh5
- 2.gxf4#
- 1...fxe3
- 2.g4#
- 1...fxg3
- 2.Bxg3#
- 1...Rf5
- 2.Qxf5#
- 1...f5
- 2.Qe8#
- 1...Qd5
- 2.Rbxd5#
- 1...Bc3
- 2.Rxc5#
- 1...Ba5
- 2.Rxc5#
- 1...Sd1
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sa4
- 2.Sd3#
- 1...Sbc4
- 2.Sd3#
- 1...Sb1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sb3
- 2.Sf3#
- 1...Sdc4
- 2.Sf3#
- 1...Se4
- 2.Sf3#
- 1...f3
- 2.g4#
- 1...f6
- 2.Qe8#
- 1...Sf3+
- 1.Bh7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Q(f);N_PINP(F),N_SPINQ(f),P_PINP(G),XR(H)::P(F),XP(e)
- Q(f);N_PINP(F),OGATE,P_PINP(G)::R1(H),XQ(f)
- R(h);N_SPINR(h),OGATE,XQ(I)::P(G),XP(e)
- B(d);N_GUARD::R(H),XQ(f)
- S(b);N_GUARD::S(A)
- S(b);CHECK,N_GUARD::S(A),XS(b)
- P(e);P_PINP(G),XP(F)::B(E)+P(G)
- P(e);OGATE,P_SPINP(e),XP(G)::B(E),XP(e)
- P(e);::B(E)+P(G)
- P(j);N_SPINR(h),OGATE::QAR(I)
- P(j);OGATE::QAR(I)
- Tries
- Try
- Q(I);N_PINR(h),XP(j)
- Threat
- DUALS(5)
- Vars
- S(b);CHECK,N_GUARD::S(A),XS(b)
- S(a);::QAR1(I)
- Refutation
- R(h);CHECK,XP(G)
- Try
- Q(I);CHECK,XR(h)
- Refutation
- P(i);XQ(I)
- Try
- P(G);P_PINP(e)
- Threat
- B(E),XP(e)
- Vars
- S(b);CHECK,N_GUARD::S(A),XS(b)
- Refutation
- S(a);
- Try
- Actual
- B(D);
- Vars
- S(b);CHECK,N_GUARD::S(A),XS(b)
- Q(f);N_PINP(F),N_SPINQ(f),P_PINP(G),XR(H)::P(F),XP(e)
- R(h);N_SPINR(h),OGATE,XQ(I)::P(G),XP(e)
- P(e);P_PINP(G),XP(F)::B(E)+P(G)
- P(e);OGATE,P_SPINP(e),XP(G)::B(E),XP(e)
- R(h);OGATE::QAR1(I),XR(h)
- P(j);N_SPINR(h),OGATE::QAR(I)
- Q(f);N_PINP(F),OGATE,P_PINP(G)::R1(H),XQ(f)
- B(d);N_GUARD::R(H),XQ(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(b);N_GUARD::S(A)
- P(e);::B(E)+P(G)
- P(j);OGATE::QAR(I)
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).