MESON Chess Problem Database
Problem Display
PID: 22085 (R1q1nkN1/1R3B2/8/2N1B3/1Q6/8/8/2K5 w - - 0 1)
Gamage, Frederick
1st Prize, Falkirk Herald, 1941
#2
8 + 3
| 5064 | 100 Years of the American Two-move Chess Problem | 1962 |
| 145 | StrateGems | 1998 |
| 5397 | Frederick Gamage (Prcic) | 2004 |
| 145 | StrateGems | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Rxe8#
- 1...Qg4
- 2.Se4#
- 2.Se6#
- 2.Rxe8#
- 1...Qf5
- 2.Sb3#
- 2.Sd3#
- 2.Sa4#
- 2.Se4#
- 2.Sa6#
- 2.Se6#
- 2.Rxe8#
- 1...Qe6
- 2.Sxe6#
- 1...Qxc5+
- 2.Qxc5#
- 1...Qxa8
- 2.Se6#
- 1...Qb8
- 2.Se6#
- 1...Qd8
- 2.Se6#
- 1...Sg7
- 2.Bd6#
- 1...Qh3
- Tries
- 1.Qc4?
- 1...Qxb7
- 2.Rxe8#
- 1...Qxc5
- 2.Rxe8#
- 2.Qxc5#
- 1...Qxa8
- 2.Se6#
- 2.Sd7#
- 1...Sf6
- 2.Se6#
- 1...Qh3
- 2.Rxe8#
- 1...Qg4
- 2.Rxe8#
- 1...Qf5
- 2.Rxe8#
- 1...Qe6
- 2.Sxe6#
- 1...Qd7
- 2.Sxd7#
- 1...Qc7
- 2.Rxe8#
- 1...Qb8
- 2.Se6#
- 2.Sd7#
- 1...Qd8
- 2.Se6#
- 1...Sd6
- 2.Se6#
- 2.Sd7#
- 1...Sc7
- 2.Sd7#
- 1...Sg7
- 2.Sd7#
- 2.Bd6#
- 1...Qc6!
- 1...Qxb7
- 1.Qg4?
- 1...Qxg4
- 2.Rxe8#
- 1...Qxb7
- 2.Qg7#
- 1...Qxa8
- 2.Se6#
- 1...Qd7
- 2.Qg7#
- 1...Qc7
- 2.Qg7#
- 1...Sc7
- 2.Qg7#
- 1...Qc6
- 2.Bg7#
- 2.Qg7#
- 1...Qf5
- 2.Bd6#
- 2.Bg7#
- 2.Rxe8#
- 2.Qg7#
- 1...Qe6
- 2.Sxe6#
- 2.Bg7#
- 2.Qg7#
- 1...Qb8
- 2.Se6#
- 1...Qd8
- 2.Se6#
- 1...Sd6
- 2.Bxd6#
- 2.Bg7#
- 2.Qg7#
- 1...Sf6
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 2.Bxg7#
- 2.Qxg7#
- 1...Qxc5+!
- 1...Qxg4
- 1.Qc4?
- Keys
- 1.Qf4!
- 1...Qxc5+
- 2.Bc4#
- 1...Qxb7
- 2.Se6#
- 2.Rxe8#
- 1...Qxa8
- 2.Se6#
- 2.Sd7#
- 1...Sf6
- 2.Qh6#
- 1...Qc6
- 2.Be6#
- 1...Qh3
- 2.Rxe8#
- 1...Qg4
- 2.Rxe8#
- 1...Qf5
- 2.Rxe8#
- 2.Qh6#
- 1...Qe6
- 2.Sxe6#
- 2.Bxe6#
- 1...Qd7
- 2.Sxd7#
- 1...Qc7
- 2.Rxe8#
- 1...Qb8
- 2.Se6#
- 2.Sd7#
- 1...Qd8
- 2.Se6#
- 1...Sd6
- 2.Qh6#
- 1...Sc7
- 2.Sd7#
- 1...Sg7
- 2.Bd6#
- 1...Qxc5+
- 1.Qf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- Q(a);N_PINS(C),P_SPINS(b)::QAB(B)+S(C),DCHECK,XQ(a)
- Q(a);CHECK,OGATE,P_SPINQ(a),P_SPINS(b),XS(C)::QAB(B),XQ(a)
- Q(a);N_PINS(C),XR(G)::QAB(B)+S(C),DCHECK
- Q(a);N_PINS(C)::QAB(B)+S(C),DCHECK
- S(b);N_GUARD,P_SPINQ(a),SBLOCK::B(D)
- Tries
- Try
- Q(B);N_SPINS(C)
- Vars
- Q(a);OGATE,P_SPINS(b),XR(E)::R1(G),XS(b)
- S(b);P_SPINQ(a)::S(C)
- Q(a);OGATE,P_SPINS(b)::R1(G),XS(b)
- Q(a);N_GUARD,P_SPINS(b)::S(C),XQ(a)
- Q(a);N_GUARD::S(C)
- Refutation
- Q(a);P_SPINS(b)
- Try
- Q(B);
- Vars
- Q(a);N_PINS(C),OGATE,P_SPINS(b),XQ(B)::R1(G),XS(b)
- Q(a);N_PINS(C),P_SPINS(b),XR(E)::QAB1(B)
- Q(a);N_PINS(C),XR(G)::S(C)
- Q(a);N_PINS(C),P_SPINS(b)::QAB1(B)
- Q(a);P_SPINS(b)::QAB1(B)
- S(b);N_GUARD,N_PINS(C),P_SPINQ(a)::QAB1(B)
- Q(a);N_PINS(C)::S(C)
- S(b);N_GUARD,P_SPINQ(a)::B(D)
- Refutation
- Q(a);CHECK,P_SPINS(b),XS(C)
- Try
- Actual
- Q(B);
- Vars
- Q(a);CHECK,N_GUARD,P_SPINS(b),XS(C)::QAR(B)+B(F)
- S(b);N_GUARD,P_SPINQ(a)::QAB(B)
- Q(a);P_SPINS(b)::QAR(B)+B(F)
- Q(a);N_PINS(C),OGATE,P_SPINS(b)::R1(G),XS(b)
- Q(a);N_PINS(C),P_SPINS(b)::S(C),XQ(a)
- Q(a);OGATE,P_SPINS(b)::R1(G),XS(b)
- Q(a);N_PINS(C)::S(C)
- S(b);N_PINS(C),P_SPINQ(a)::S(C)
- S(b);N_GUARD,P_SPINQ(a),SBLOCK::B(D)
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).