MESON Chess Problem Database
Problem Display
PID: 10043 (2nRK3/2NP4/3k1B2/Q1ppN2R/q5B1/1b2b3/8/8 w - - 0 1)
Barnes, Barry Peter
2nd HM., Postsjakk, 1961
#2
9 + 7
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
| 4199 | Barnes about Chess Problems | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Qb5
- 2.Sxb5#
- 1...Qc6
- 2.Sf7#
- 1...Qxd7+
- 2.Rxd7#
- 1...Qa1
- 2.Sb5#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qa2
- 2.Sb5#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qa3
- 2.Sb5#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qb4
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qc4
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qd4
- 2.Sb5#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qe4
- 2.Sb5#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qf4
- 2.Sb5#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qxg4
- 2.dxc8S#
- 1...Qxa5
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sa7
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Qb5
- Tries
- 1.Kf7?
- threat
- 2.Se8#
- 2.dxc8S#
- 1...Qxd7+
- 2.Rxd7#
- 1...Qxa5
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sb6
- 2.Se8#
- 1...Qa1
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qa2
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qa3
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qb4
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qc4
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qd4
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qe4
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qf4
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Sa7
- 2.Se8#
- 2.Be7#
- 1...Se7
- 2.Se8#
- 2.Bxe7#
- 1...d4+!
- threat
- 1.Kf8?
- threat
- 2.Se8#
- 2.dxc8S#
- 1...Qxd7
- 2.Sb5#
- 2.Se8#
- 2.Rxd7#
- 1...Qxg4
- 2.dxc8S#
- 1...Qxa5
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sb6
- 2.Se8#
- 1...Qa1
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qa2
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qa3
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qb4
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qc4
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qd4
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qe4
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Qf4
- 2.Sb5#
- 2.Se8#
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...Sa7
- 2.Se8#
- 2.Be7#
- 1...Se7
- 2.Se8#
- 2.Bxe7#
- 1...d4
- 2.dxc8S#
- 1...Bh6+!
- threat
- 1.Sa6?
- threat
- 2.Qc7#
- 1...Qxd7+
- 2.Rxd7#
- 1...Qxa5
- 2.dxc8S#
- 1...d4
- 2.Qxc5#
- 1...Qc6
- 2.Sf7#
- 1...Sb6
- 2.Be7#
- 1...Qxg4!
- threat
- 1.Qb6+?
- 1...Qc6
- 2.Sf7#
- 2.Sb5#
- 2.Qxc6#
- 1...Sxb6!
- 1...Qc6
- 1.Qa6+?
- 1...Kxc7
- 2.Rxc8#
- 1...Qc6
- 2.Sb5#
- 2.Qxc6#
- 1...Qxa6
- 2.dxc8Q#
- 2.dxc8R#
- 1...Sb6!
- 1...Kxc7
- 1.Kf7?
- Keys
- 1.Se6!
- threat
- 2.Qc7#
- 1...Qxd7+
- 2.Rxd7#
- 1...Qxg4
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qxa5
- 2.dxc8S#
- 1...d4
- 2.Qxc5#
- 1...Qc6
- 2.Sf7#
- 1...Sb6
- 2.Be7#
- threat
- 1.Se6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(c);N_GUARD::S(F),XQ(c)
- Q(c);SBLOCK::S(C)
- Q(c);CHECK,OGATE,P_SPINQ(c),XP(G)::R1(H),XQ(c)
- Q(c);N_PINP(G),XB(A)::PXS(g)=S
- Q(c);N_PINP(G),XQ(B)::PXS(g)=Q
- S(g);N_GUARD::B(E)
- S(g);N_GUARD::B(E),XS(g)
- Tries
- Try
- K(I);N_SPINP(G),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XP(G)::R1(H),XQ(c)
- S(g);::S(F)
- Refutation
- P(e);CHECK
- Try
- K(I);N_SPINP(G),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XB(A)::PXS(g)=S
- S(g);::S(F)
- P(e);::PXS(g)=S
- Refutation
- B(b);CHECK
- Try
- S(F);
- Threat
- QAB1(B)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XP(G)::R1(H),XQ(c)
- Q(c);N_PINP(G),XQ(B)::PXS(g)=S
- P(e);S_CUTB(b)::QAB1(B),XP(d)
- Q(c);SBLOCK::S(C)
- S(g);N_GUARD::B(E)
- Refutation
- Q(c);N_PINP(G),XB(A)
- Try
- Q(B);CHECK
- Refutation
- S(g);XQ(B)
- Try
- Q(B);CHECK
- Vars
- K(f);S_FLIGHT,XS(F)::R1(H),XS(g)
- Q(c);N_PINP(G),XQ(B)::PXS(g)=Q
- Refutation
- S(g);P_SPINS(g)
- Try
- Actual
- S(F);
- Threat
- QAB1(B)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XP(G)::R1(H),XQ(c)
- Q(c);N_PINP(G),XB(A)::PXS(g)=Q
- Q(c);N_PINP(G),XQ(B)::PXS(g)=S
- P(e);S_CUTB(b)::QAB1(B),XP(d)
- Q(c);SBLOCK::S(C)
- S(g);N_GUARD::B(E)
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).