MESON Chess Problem Database
Problem Display
PID: 17308 (K7/p7/3R2Q1/pk1B4/p3r3/B2P4/1N6/1R1q3b w - - 0 1)
Anderson, Gerald Frank
Nascimento, Raul C
1st Prize, BCF 051. Ty., 1945-1946
#2
8 + 7
| 268 | Chess Life | 1954 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 133 | The Problemist Supplement | 2008 |
| 14869 | British Championship Solving Ty. | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Sc4#
- 1...Qg4
- 2.Sc4#
- 1...Qh5
- 2.Sc4#
- 1...Re1
- 2.Sxd1#
- 1...Re3
- 2.Sxd1#
- 1...Rc4
- 2.dxc4#
- 1...Rd4
- 2.Qe8#
- 1...Rf4
- 2.Qe8#
- 1...Rg4
- 2.Qe8#
- 1...Rh4
- 2.Qe8#
- 1...Re5
- 2.Sxd1#
- 1...Re6
- 2.Sxd1#
- 1...Re7
- 2.Sxd1#
- 1...Re8+
- 2.Qxe8#
- 1...a6
- 2.Rb6#
- 1...Qf3
- Tries
- 1.Sxa4+?
- 1...Qb3
- 2.Sc3#
- 1...Qxb1
- 2.Sc3#
- 1...Rb4
- 2.Qe8#
- 1...Kxa4!
- 1...Qb3
- 1.Bc6+?
- 1...Ka6
- 2.Bxa4#
- 2.Bd7#
- 2.Be8#
- 1...Kb6!
- 1...Ka6
- 1.Rd8?
- threat
- 2.Rb8#
- 2.Qc6#
- 1...Rb4
- 2.Qc6#
- 1...Qc2
- 2.Rb8#
- 1...Qc1
- 2.Rb8#
- 1...Qg1
- 2.Qc6#
- 1...Rc4
- 2.Rb8#
- 2.dxc4#
- 1...Re7
- 2.Sxd1#
- 2.Qc6#
- 1...Re8
- 2.Sxd1#
- 2.Qc6#
- 1...Re6!
- threat
- 1.Qxe4?
- threat
- 2.Sxd1#
- 2.Bc4#
- 2.Qc4#
- 2.Qe8#
- 1...Qxb1
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 2.Qe8#
- 1...Qxd3
- 2.Sxd3#
- 2.Qxd3#
- 2.Qxa4#
- 2.Qe8#
- 1...Bxe4
- 2.Sxd1#
- 1...Qe2
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 1...Qb3
- 2.Qe8#
- 1...Qf3
- 2.Sd1#
- 2.Sxa4#
- 2.Sc4#
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 2.Qe8#
- 1...Qg4
- 2.Sd1#
- 2.Sxa4#
- 2.Sc4#
- 2.Bc4#
- 1...Qh5
- 2.Sd1#
- 2.Sxa4#
- 2.Sc4#
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 1...Qc1
- 2.Qxa4#
- 1...Qe1
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 1...Qf1
- 2.Sd1#
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 2.Qe8#
- 1...Qg1
- 2.Sd1#
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 2.Qe8#
- 1...Qd2
- 2.Bc4#
- 2.Qxa4#
- 2.Qc4#
- 2.Qe8#
- 1...Qc2!
- threat
- 1.Qf5?
- threat
- 2.Bc4#
- 2.Bxe4#
- 2.Qd7#
- 1...Qxd3
- 2.Bc4#
- 2.Qd7#
- 1...Rb4
- 2.Bxh1#
- 2.Bg2#
- 2.Bf3#
- 2.Be4#
- 1...Qc2
- 2.Bc4#
- 1...Qb3
- 2.Bc4#
- 2.Qd7#
- 1...Qf3
- 2.Sc4#
- 2.Bc4#
- 2.Qd7#
- 1...Qg4
- 2.Sc4#
- 2.Bc4#
- 1...Qh5
- 2.Sc4#
- 2.Bc4#
- 2.Qd7#
- 1...Qc1
- 2.Bc4#
- 1...Qf1
- 2.Bc4#
- 2.Qd7#
- 1...Qg1
- 2.Bc4#
- 2.Qd7#
- 1...Re1
- 2.Sxd1#
- 2.Be4#
- 2.Qd7#
- 1...Re2
- 2.Be4#
- 2.Qd7#
- 1...Re3
- 2.Sxd1#
- 2.Be4#
- 2.Qd7#
- 1...Rc4
- 2.dxc4#
- 1...Rd4
- 2.Qd7#
- 1...Rf4
- 2.Qd7#
- 1...Rg4
- 2.Bxh1#
- 2.Bg2#
- 2.Bf3#
- 2.Be4#
- 2.Qd7#
- 1...Rh4
- 2.Bxh1#
- 2.Bg2#
- 2.Bf3#
- 2.Be4#
- 2.Qd7#
- 1...Re5
- 2.Sxd1#
- 2.Qd7#
- 1...Re6
- 2.Sxd1#
- 1...Re7
- 2.Sxd1#
- 1...Re8+!
- threat
- 1.Qf7?
- threat
- 2.Qb7#
- 2.Qd7#
- 1...Re8+
- 2.Qxe8#
- 1...Qc2
- 2.Qb7#
- 1...Qg4
- 2.Sc4#
- 2.Qb7#
- 1...Qc1
- 2.Qb7#
- 1...Qg1
- 2.Qd7#
- 1...Rc4
- 2.Qb7#
- 2.dxc4#
- 1...Re7
- 2.Sxd1#
- 1...Rb4!
- threat
- 1.Sxa4+?
- Keys
- 1.Qh5!
- threat
- 2.Bc4#
- 1...Re8+
- 2.Qxe8#
- 1...Qxh5
- 2.Sc4#
- 1...Rb4
- 2.Bf3#
- 1...Re1
- 2.Sxd1#
- 1...Re2
- 2.Be4#
- 1...Re3
- 2.Sxd1#
- 1...Rc4
- 2.dxc4#
- 1...Rd4
- 2.Qe8#
- 1...Rf4
- 2.Qe8#
- 1...Rg4
- 2.Qe8#
- 1...Rh4
- 2.Qe8#
- 1...Re5
- 2.Sxd1#
- 1...Re6
- 2.Sxd1#
- 1...Re7
- 2.Sxd1#
- threat
- 1.Qh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::R(A)+S(B)
- R(d);N_GUARD,P_PINB(E)::R(A)+S(B),XQ(a)
- R(d);OGATE,P_PINB(E)::P(D),XR(d)
- R(d);N_GUARD,P_PINB(E)::QAB(G)
- R(d);CHECK,N_GUARD,P_PINB(E)::QAB(G),XR(d)
- P(g);N_GUARD::R1(F)
- Tries
- Try
- S(B);CHECK,XP(c)
- Vars
- Q(a);P_SPINQ(a)::S(B)
- Q(a);XR(A)::S(B)
- R(d);P_PINB(E),P_SPINR(d)::QAB(G)
- Refutation
- K(f);S_FLIGHT,XS(B)
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(d);P_PINB(E)::QAB1(G)
- Q(a);::R(F)
- Q(a);::QAB1(G)
- Refutation
- R(d);P_PINB(E)
- Try
- Q(G);XR(d)
- Threat
- DUALS(4)
- Vars
- B(b);P_PINB(E),XQ(G)::R(A)+S(B),XQ(a)
- Q(a);::QAB(G)
- Q(a);N_GUARD::QAB1(G),XP(c)
- Refutation
- Q(a);
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- Q(a);::QAR(G)+B(E),DCHECK
- R(d);OGATE,P_PINB(E)::P(D),XR(d)
- R(d);P_PINB(E)::QAB(G)
- R(d);N_GUARD,P_PINB(E)::R(A)+S(B),XQ(a)
- Refutation
- R(d);CHECK,P_PINB(E)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD,P_PINB(E)::QAB(G),XR(d)
- Q(a);::QAR2(G)
- Q(a);::QAB(G)
- R(d);N_GUARD,P_PINB(E)::R(A)+S(B),XQ(a)
- Refutation
- R(d);P_PINB(E)
- Try
- Actual
- Q(G);
- Threat
- QAR(G)+B(E),DCHECK
- Vars
- R(d);CHECK,N_GUARD,P_PINB(E)::QAB(G),XR(d)
- Q(a);N_GUARD,XQ(G)::R(A)+S(B)
- R(d);OGATE,P_PINB(E)::QAR(G)+B(E)
- R(d);N_GUARD,P_PINB(E)::R(A)+S(B),XQ(a)
- R(d);P_PINB(E),S_CUTQ(a)::QAR(G)+B(E)
- R(d);OGATE,P_PINB(E)::P(D),XR(d)
- R(d);N_GUARD,P_PINB(E)::QAB(G)
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).