MESON Chess Problem Database
Problem Display
PID: 33325 (2Q5/4pN2/3p1pP1/1b1pBP1q/r3k3/2PRnRP1/2P1K1P1/8 w - - 0 1)
Zidek, Alexander
Dagbladet, 1987
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxf3+
- 2.gxf3#
- 1...Qxg6
- 2.Rxe3#
- 2.Rf4#
- 1...Qh1
- 2.Rxe3#
- 2.Rf4#
- 1...Qh2
- 2.Rxe3#
- 2.Rf4#
- 1...Qh3
- 2.Rxe3#
- 2.Rf4#
- 1...Qh4
- 2.Rxe3#
- 1...Qxf5
- 2.Rxe3#
- 1...Qh7
- 2.Rxe3#
- 2.Rf4#
- 1...Qh8
- 2.Rxe3#
- 2.Rf4#
- 1...Rc4
- 2.Rxe3#
- 1...Bxd3+
- 2.cxd3#
- 1...Bc6
- 2.Rxe3#
- 1...Bd7
- 2.Rxe3#
- 1...Be8
- 2.Rxe3#
- 1...Sc4
- 2.Rd4#
- 1...Sg4
- 2.Rf4#
- 1...Qxf3+
- Tries
- 1.Sxd6+?
- 1...Kxe5
- 2.Qe6#
- 1...exd6!
- 1...Kxe5
- 1.Bd4?
- threat
- 2.Qe6#
- 1...Qxf3+
- 2.gxf3#
- 1...Bxd3+
- 2.cxd3#
- 1...Qxf5
- 2.Rxe3#
- 1...Bd7
- 2.Rxe3#
- 1...Sg4
- 2.Rf4#
- 1...e5
- 2.Sxd6#
- 1...e6
- 2.Sxd6#
- 2.Qxe6#
- 1...Sc4!
- threat
- 1.Bxd6?
- threat
- 2.Qe6#
- 1...Qxf3+
- 2.gxf3#
- 1...Bxd3+
- 2.cxd3#
- 1...Qxf5
- 2.Rxe3#
- 1...Bd7
- 2.Rxe3#
- 1...Sc4
- 2.Rd4#
- 1...Sg4
- 2.Rf4#
- 1...e6
- 2.Qxe6#
- 1...e5!
- threat
- 1.Qc4+?
- 1...Rxc4
- 2.Rxe3#
- 1...Sxc4
- 2.Rd4#
- 1...dxc4
- 2.Rd4#
- 1...d4
- 2.Rxe3#
- 2.Rxd4#
- 1...Bxc4!
- 1...Rxc4
- 1.Sxd6+?
- Keys
- 1.Bxf6!
- threat
- 2.Qe6#
- 1...Qxf3+
- 2.gxf3#
- 1...Bxd3+
- 2.cxd3#
- 1...Qxf5
- 2.Rxe3#
- 1...Bd7
- 2.Rxe3#
- 1...Sc4
- 2.Rd4#
- 1...Sg4
- 2.Rf4#
- 1...e5
- 2.Sxd6#
- 1...e6
- 2.Sxd6#
- 2.Qxe6#
- threat
- 1.Bxf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(f);CHECK,OGATE,XR(F)::P(C),XQ(f)
- Q(f);OGATE::R1(F),XS(a)
- Q(f);OGATE,XP(I)::R1(F),XS(a)
- R(b);N_PINR(E),P_PINR(F)::R1(E),XS(a)
- B(d);CHECK,OGATE,P_PINR(F),XR(E)::P(A),XB(d)
- B(d);N_PINR(E),P_PINR(F)::R1(E),XS(a)
- S(a);N_PINR(E),P_PINR(F)::R1(E)
- S(a);OGATE::R1(F)
- Tries
- Try
- S(K);CHECK,XP(g)
- Vars
- K(c);P-FLIGHT,XB(H)::QAR1(L)
- Refutation
- P(i);XS(K)
- Try
- B(H);
- Threat
- QAR2(L)
- Vars
- Q(f);CHECK,OGATE,XR(F)::P(C),XQ(f)
- B(d);CHECK,OGATE,P_PINR(F),XR(E)::P(A),XB(d)
- Q(f);OGATE,XP(I)::R1(F),XS(a)
- B(d);N_PINR(E),P_PINR(F)::R1(E),XS(a)
- S(a);OGATE::R1(F)
- P(i);N_GUARD::S(K),XP(g)
- Refutation
- S(a);N_PINR(E),P_PINR(F)
- Try
- B(H);XP(g)
- Threat
- QAR2(L)
- Vars
- Q(f);CHECK,OGATE,XR(F)::P(C),XQ(f)
- B(d);CHECK,OGATE,P_PINR(F),XR(E)::P(A),XB(d)
- Q(f);OGATE,XP(I)::R1(F),XS(a)
- B(d);N_PINR(E),P_PINR(F)::R1(E),XS(a)
- S(a);N_PINR(E),P_PINR(F)::R1(E)
- S(a);OGATE::R1(F)
- P(i);::QAR2(L),XP(i)
- Refutation
- P(i);
- Try
- Q(L);CHECK,N_SPINR(E),P_SPINR(F)
- Vars
- R(b);XQ(L)::R1(E),XS(a)
- S(a);XQ(L)::R1(E)
- P(e);XQ(L)::R1(E)
- Refutation
- B(d);N_PINR(F),P_PINR(E),XQ(L)
- Try
- Actual
- B(H);XP(h)
- Threat
- QAR2(L)
- Vars
- Q(f);CHECK,OGATE,XR(F)::P(C),XQ(f)
- B(d);CHECK,OGATE,P_PINR(F),XR(E)::P(A),XB(d)
- Q(f);OGATE,XP(I)::R1(F),XS(a)
- B(d);N_PINR(E),P_PINR(F)::R1(E),XS(a)
- S(a);N_PINR(E),P_PINR(F)::R1(E)
- S(a);OGATE::R1(F)
- P(i);N_GUARD::S(K),XP(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).