MESON Chess Problem Database
Problem Display
PID: 64229 (2n3NK/q1p1P3/1pP2P2/pR1NbRpB/4k3/2Pp2p1/3B2bp/3Q4 w - - 0 1)
Zappas, Byron
3rd Prize, The Problemist, 1979/I
#2
12 + 12
| 56 | The Problemist | 1980 |
| 3750 | FIDE Album (1977-1979) | 1984 |
SOLUTION
- SOUND
- Sets
- 1...Kxf5
- 2.Qg4#
- 1...Bf1
- 2.Qf3#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Bxc3
- 2.Qg4#
- 1...Bd4
- 2.Qg4#
- 1...Bxf6+
- 2.Sdxf6#
- 1...Kxf5
- Tries
- 1.Se3?
- threat
- 2.Rbxe5#
- 1...Bxf6+
- 2.Sxf6#
- 1...Bxc3
- 2.Qg4#
- 1...Bd4
- 2.Qg4#
- 1...Bf4
- 2.Qa4#
- 1...Bd6!
- threat
- 1.Sb4?
- threat
- 2.Rbxe5#
- 2.Rfxe5#
- 1...Bxf6+
- 2.Sxf6#
- 1...Kxf5
- 2.Qg4#
- 1...Bxc3
- 2.Qg4#
- 1...Bd4
- 2.Qg4#
- 1...Bd6
- 2.Qe1#
- 1...Bf4!
- threat
- 1.Sxc7?
- threat
- 2.Rbxe5#
- 2.Rfxe5#
- 1...Bxf6+
- 2.Sxf6#
- 1...Kxf5
- 2.Qg4#
- 1...Bxc3
- 2.Qg4#
- 1...Bxc7
- 2.Qa4#
- 2.Qe1#
- 1...Bd4
- 2.Qg4#
- 1...Bf4
- 2.Qa4#
- 1...Bd6
- 2.Qe1#
- 1...Qxc7!
- threat
- 1.Bf3+?
- 1...Bxf3
- 2.Qxf3#
- 1...Kxf5!
- 1...Bxf3
- 1.Rf4+?
- 1...gxf4
- 2.Bg6#
- 1...Bxf4!
- 1...gxf4
- 1.Qe2+?
- 1...Kxf5
- 2.Qg4#
- 1...dxe2!
- 1...Kxf5
- 1.Qa4+?
- 1...Kxf5
- 2.Qg4#
- 1...Bd4!
- 1...Kxf5
- 1.e8Q?
- threat
- 2.Rxe5#
- 2.Qg4#
- 2.Qxe5#
- 1...Kxf5
- 2.Bg6#
- 2.Qg4#
- 1...Bf3
- 2.Rxe5#
- 2.Qxf3#
- 2.Qxe5#
- 1...Bh3
- 2.Rxe5#
- 2.Qf3#
- 2.Qxe5#
- 1...g4
- 2.Rf4#
- 2.Rxe5#
- 2.Qxg4#
- 2.Qxe5#
- 1...Se7!
- threat
- 1.e8R?
- threat
- 2.Rfxe5#
- 2.Rexe5#
- 2.Qg4#
- 1...Kxf5
- 2.Qg4#
- 1...Bf3
- 2.Rfxe5#
- 2.Rexe5#
- 2.Qxf3#
- 1...Bh3
- 2.Rfxe5#
- 2.Rexe5#
- 2.Qf3#
- 1...g4
- 2.Rf4#
- 2.Rfxe5#
- 2.Rexe5#
- 2.Qxg4#
- 1...Se7!
- threat
- 1.Se3?
- Keys
- 1.Sxb6!
- threat
- 2.Rbxe5#
- 2.Rfxe5#
- 1...Bxf6+
- 2.Sxf6#
- 1...Kxf5
- 2.Qg4#
- 1...Bxc3
- 2.Qg4#
- 1...Bd4
- 2.Qg4#
- 1...Bf4
- 2.Qa4#
- 1...Bd6
- 2.Qe1#
- threat
- 1.Sxb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- K(e);S_FLIGHT,XR(F)::QAB1(A)
- B(a);N_GUARD::QAB1(A)
- B(a);N_GUARD::QAB1(A),XB(a)
- B(g);N_GUARD,XP(C)::QAR2(A)
- B(g);N_GUARD::QAR2(A)
- B(g);CHECK,XP(I)::S(E),XB(g)
- Tries
- Try
- S(E);
- Threat
- R1(D),XB(g)
- Vars
- B(g);CHECK,XP(I)::S(K),XB(g)
- B(g);N_GUARD,XP(C)::QAR2(A)
- B(g);N_GUARD::QAR2(A)
- B(g);N_GUARD,N_PINP(I)::QAR(A)
- Refutation
- B(g);N_PINP(I)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,XP(I)::S(K),XB(g)
- K(e);P_SPINB(g),S_FLIGHT,XR(F)::QAB1(A)
- B(g);N_GUARD,XP(C)::QAR2(A)
- B(g);N_GUARD::QAR2(A)
- B(g);N_PINP(I)::QAR(A)
- Refutation
- B(g);N_PINP(I)
- Try
- S(E);XP(k)
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,XP(I)::S(K),XB(g)
- K(e);P_SPINB(g),S_FLIGHT,XR(F)::QAB1(A)
- B(g);N_GUARD,XP(C)::QAR2(A)
- B(g);N_GUARD::QAR2(A)
- B(g);N_GUARD,N_PINP(I)::QAR(A)
- B(g);N_PINP(I)::QAR(A)
- Refutation
- Q(j);XS(E)
- Try
- B(G);CHECK
- Vars
- B(a);OGATE,XB(G)::QAB1(A),XB(a)
- Refutation
- K(e);S_FLIGHT,XR(F)
- Try
- R(F);CHECK
- Vars
- P(h);XR(F)::B(G)
- Refutation
- B(g);N_PINP(I),XR(F)
- Try
- Q(A);CHECK
- Vars
- K(e);S_FLIGHT,XR(F)::QAB1(A)
- Refutation
- P(c);XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(e);OGATE,S_FLIGHT,XR(F)::QAB1(A)
- Refutation
- B(g);P_SPINB(g)
- Try
- P(J);P_PINB(g)
- Threat
- DUALS(3)
- Refutation
- S(l);N_SPINB(g)
- Try
- P(J);P_PINB(g)
- Threat
- DUALS(3)
- Vars
- K(e);N_SPINB(g),S_FLIGHT,XR(F)::QAB1(A)
- Refutation
- S(l);N_SPINB(g)
- Try
- Actual
- S(E);XP(i)
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,XP(I)::S(K),XB(g)
- K(e);P_SPINB(g),S_FLIGHT,XR(F)::QAB1(A)
- B(g);N_GUARD,XP(C)::QAR2(A)
- B(g);N_GUARD::QAR2(A)
- B(g);N_GUARD,N_PINP(I)::QAR(A)
- B(g);N_PINP(I)::QAR(A)
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).