MESON Chess Problem Database
Problem Display
PID: 285380 (KB6/6N1/6R1/3pN3/3Qbr1k/3p1p2/3P1p2/4bB2 w - - 0 1)
Zilahi, Zoltan
Zurcher Woche, 1959
#2
8 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2026 |
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Rxg4#
- 1...Rf5
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rf7
- 2.Rg4#
- 1...Rf8
- 2.Rg4#
- 1...Bxd2
- 2.Qxf2#
- 1...Bf5
- 2.Sxf3#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- Tries
- 1.Ka7?
- 1...Bxd2
- 2.Qxf2#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Rf5
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rf8
- 2.Rg4#
- 1...Bf5
- 2.Sxf3#
- 1...Rf7+!
- 1...Bxd2
- 1.Kb7?
- 1...Bxd2
- 2.Qxf2#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Rf5
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rf8
- 2.Rg4#
- 1...Bf5
- 2.Sxf3#
- 1...Rf7+!
- 1...Bxd2
- 1.Bd6?
- 1...Bxd2
- 2.Qxf2#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Rf5
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rf7
- 2.Rg4#
- 1...Bf5
- 2.Sxf3#
- 2.Be7#
- 1...Rf8+!
- 1...Bxd2
- 1.Ba7?
- 1...Bxd2
- 2.Qxf2#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Rf5
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rf7
- 2.Rg4#
- 1...Bf5
- 2.Sxf3#
- 1...Rf8+!
- 1...Bxd2
- 1.Bc7?
- 1...Bxd2
- 2.Qxf2#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- 2.Rxg4#
- 1...Rf5
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rf7
- 2.Rg4#
- 1...Bf5
- 2.Sxf3#
- 2.Bd8#
- 1...Rf8+!
- 1...Bxd2
- 1.Rh6+?
- 1...Kg3
- 2.Rh3#
- 1...Kg5!
- 1...Kg3
- 1.Qxe4?
- threat
- 2.Sxf3#
- 2.Qxf4#
- 1...Rxe4
- 2.Sxf3#
- 1...Bxd2
- 2.Sxf3#
- 1...Rg4
- 2.Sxf3#
- 2.Rxg4#
- 2.Qxg4#
- 1...dxe4!
- threat
- 1.Ka7?
- Keys
- 1.Sf7!
- 1...Rxf7
- 2.Bg3#
- 1...Bxd2
- 2.Qxf2#
- 1...Bxg6
- 2.Qxf4#
- 1...Rg4
- 2.Rh6#
- 1...Rf5
- 2.Bg3#
- 1...Rf6
- 2.Bg3#
- 2.Qxf6#
- 1...Bf5
- 2.Qf6#
- 1...Rxf7
- 1.Sf7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINB(e)::R1(E)
- R(f);N_GUARD,P_PINB(H),P_SPINB(e)::R1(E)
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);N_GUARD,P_SPINR(f)::S(D),XP(d)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINB(e)::R1(E)
- B(e);N_GUARD,P_SPINR(f)::S(D),XP(d)
- Refutation
- R(f);CHECK,P_SPINB(e)
- Try
- K(G);S_FLIGHT
- Vars
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINB(e)::R1(E)
- B(e);N_GUARD,P_SPINR(f)::S(D),XP(d)
- Refutation
- R(f);CHECK,P_SPINB(e)
- Try
- B(H);
- Vars
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINB(e)::R1(E)
- Refutation
- R(f);CHECK,P_SPINB(e)
- Try
- B(H);
- Vars
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINB(e)::R1(E)
- B(e);N_GUARD,P_SPINR(f)::S(D),XP(d)
- Refutation
- R(f);CHECK,P_SPINB(e)
- Try
- B(H);
- Vars
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD,P_SPINB(e)::R1(E)
- Refutation
- R(f);CHECK,P_SPINB(e)
- Try
- R(E);CHECK
- Vars
- K(g);OGATE,S_FLIGHT::R1(E)
- Refutation
- K(g);S_FLIGHT
- Try
- Q(C);P_PINR(f),XB(e)
- Threat
- DUALS(2)
- Vars
- R(f);N_SPINR(f),XQ(C)::S(D),XP(d)
- B(a);XP(B)::S(D),XP(d)
- Refutation
- P(h);N_SPINR(f),XQ(C)
- Try
- Actual
- S(D);
- Vars
- R(f);OGATE,P_SPINB(e),XS(D)::B(H)
- B(a);N_GUARD,XP(B)::QAB(C),XP(b)
- B(e);OGATE,P_SPINR(f),XR(E)::QAR2(C),XR(f)
- R(f);SBLOCK::R(E)
- R(f);OGATE,P_SPINB(e)::B(H)
- B(e);P_SPINR(f)::QAB(C)
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).