MESON Chess Problem Database
Problem Display
PID: 261027 (2BQbB2/1PPn1p2/4PR1K/4kP2/R2N4/2PP1p2/5P2/8 w - - 0 1)
Syzonenko, Viktor N
2nd HM., Neue Zurcher Zeitung, 1996
#2
14 + 5
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...Sxf6
- 2.Qd6#
- 1...Sb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxf8
- 2.Sxf3#
- 1...Kf4
- Tries
- 1.Kg5?
- 1...Kd5
- 2.Ra5#
- 1...Sxf6
- 2.Sxf3#
- 2.Qd6#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 2.Qd6#
- 1...Sb6
- 2.Sxf3#
- 2.Qd6#
- 1...Sb8
- 2.Sxf3#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...fxe6!
- 1...Kd5
- 1.Ba3?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Sxf6
- 2.Qd6#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...Sb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sf8
- 2.Sxf3#
- 1...fxe6!
- 1...Kf4
- 1.Be7?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Sxf6
- 2.Qd6#
- 1...Sc5
- 2.Sxf3#
- 2.Qd6#
- 1...Sb6
- 2.Sxf3#
- 2.Qd6#
- 1...Sb8
- 2.Sxf3#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sf8
- 2.Sxf3#
- 2.Qd6#
- 1...fxe6!
- 1...Kf4
- 1.Rb4?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Rb5#
- 1...Sxf6
- 2.Qd6#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...Sb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...fxe6!
- 1...Kf4
- 1.Rc4?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Rc5#
- 1...Sxf6
- 2.Qd6#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...Sb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...fxe6!
- 1...Kf4
- 1.Rxf7?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 2.Qd6#
- 1...Sb6
- 2.Sxf3#
- 2.Qd6#
- 1...Sf6
- 2.Qd6#
- 1...Sb8
- 2.Sxf3#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxf7!
- 1...Kf4
- 1.exd7?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bxd7!
- 1...Kf4
- 1.exf7?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Sxf6
- 2.Sxf3#
- 2.Qd6#
- 1...Sxf8
- 2.Sxf3#
- 2.Qd6#
- 1...Sc5
- 2.Sxf3#
- 2.Qd6#
- 1...Sb6
- 2.Sxf3#
- 2.Qd6#
- 1...Sb8
- 2.Sxf3#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxf7!
- 1...Kf4
- 1.b8Q?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 2.Qb5#
- 1...Sxf6
- 2.Qd6#
- 1...Sxb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...fxe6!
- 1...Kf4
- 1.b8S?
- 1...Kf4
- 2.Sdc6#
- 1...Kd5
- 2.Ra5#
- 1...Sxf6
- 2.Qd6#
- 1...Sxb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...fxe6!
- 1...Kf4
- 1.b8B?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Sxf6
- 2.Qd6#
- 1...Sxb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...fxe6!
- 1...Kf4
- 1.b8R?
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 2.Rb5#
- 1...Sxf6
- 2.Qd6#
- 1...Sxb8
- 2.Sxf3#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxf8
- 2.Sxf3#
- 1...Sc5
- 2.Sxf3#
- 1...Sb6
- 2.Sxf3#
- 1...fxe6!
- 1...Kf4
- 1.Kg5?
- Keys
- 1.e7!
- 1...Kf4
- 2.Sc6#
- 1...Kd5
- 2.Ra5#
- 1...Kxf6
- 2.Bg7#
- 1...Sxf6
- 2.Sxf3#
- 1...Sxf8
- 2.Qd6#
- 1...Sc5
- 2.Qd6#
- 1...Sb6
- 2.Qd6#
- 1...Sb8
- 2.Qd6#
- 1...Kf4
- 1.e7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);::S(E),XP(a)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- K(b);P-FLIGHT,P_SPINS(c)::R(D)
- S(c);XB(N)::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- B(N);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- B(N);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);OGATE,XR(H)::QAB1(M)
- Refutation
- P(d);XP(G)
- Try
- R(D);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- R(D);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R1(D)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- R(H);XP(d)
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);XB(N)::S(E),XP(a)
- S(c);OGATE::QAB1(M)
- Refutation
- B(e);XR(H)
- Try
- P(G);XS(c)
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- Refutation
- B(e);XP(G)
- Try
- P(G);XP(d)
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- Refutation
- B(e);XP(G)
- Try
- P(J);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- P(J);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- P(J);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- P(J);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- S(c);OGATE,SBLOCK,XR(H)::QAB1(M)
- S(c);XB(N)::S(E),XP(a)
- S(c);::S(E),XP(a)
- Refutation
- P(d);XP(G)
- Try
- Actual
- P(G);
- Vars
- K(b);N_GUARD,S_FLIGHT::R(D)+S(E)
- K(b);N_GUARD,P-FLIGHT,P_SPINS(c)::R(D)
- K(b);OGATEB,S_FLIGHT,XR(H)::B(N)
- S(c);SBLOCK,XR(H)::S(E),XP(a)
- S(c);OGATE,XB(N)::QAB1(M)
- S(c);OGATE::QAB1(M)
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).