MESON Chess Problem Database
Problem Display
PID: 87676 (1BrR1Rr1/2P3PP/4p3/1pp1k1p1/1P6/1PKP4/p1PNp3/Qbn1b3 w - - 0 1)
Dobrila, Arsen
Morse, Christopher Jeremy
The Problemist, 1992
#2
13 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...Bxc2
- 2.Kxc2#
- 1...Bxd2+
- 2.Kxd2#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...cxb4+
- 2.Kxb4#
- 1...c4
- 2.d4#
- 1...Rxc7
- Tries
- 1.bxc5?
- threat
- 2.Kb4#
- 2.d4#
- 1...Bxd2+
- 2.Kxd2#
- 1...b4+
- 2.Kxb4#
- 2.Kc4#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...Bf2
- 2.Sf3#
- 1...Rxf8!
- threat
- 1.hxg8Q?
- 1...Bxd2+
- 2.Kxd2#
- 1...cxb4+
- 2.Kxb4#
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bxc2
- 2.Kxc2#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...c4
- 2.d4#
- 1...g4!
- 1...Bxd2+
- 1.hxg8S?
- 1...Bxd2+
- 2.Kxd2#
- 1...cxb4+
- 2.Kxb4#
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bxc2
- 2.Kxc2#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...c4
- 2.d4#
- 1...g4!
- 1...Bxd2+
- 1.hxg8B?
- 1...Bxd2+
- 2.Kxd2#
- 1...cxb4+
- 2.Kxb4#
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bxc2
- 2.Kxc2#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...c4
- 2.d4#
- 1...g4!
- 1...Bxd2+
- 1.hxg8R?
- 1...Bxd2+
- 2.Kxd2#
- 1...cxb4+
- 2.Kxb4#
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bxc2
- 2.Kxc2#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...c4
- 2.d4#
- 1...g4!
- 1...Bxd2+
- 1.h8B?
- 1...Bxd2+
- 2.Kxd2#
- 1...cxb4+
- 2.Kxb4#
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rxg7
- 2.Bxg7#
- 1...Rxf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...Rxh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...Bxc2
- 2.Kxc2#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...c4
- 2.d4#
- 1...g4!
- 1...Bxd2+
- 1.bxc5?
- Keys
- 1.h8Q!
- 1...Bxd2+
- 2.Kxd2#
- 1...cxb4+
- 2.Kxb4#
- 1...Rxc7
- 2.Bxc7#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxd8
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rxg7
- 2.Qxg7#
- 1...Rxf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...Rxh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...Bxc2
- 2.Kxc2#
- 1...Sxb3
- 2.Kxb3#
- 1...Sxd3
- 2.Kxd3#
- 1...g4
- 2.Qh5#
- 1...Bf2
- 2.Sf3#
- 1...Bg3
- 2.Sf3#
- 1...Bh4
- 2.Sf3#
- 1...c4
- 2.d4#
- 1...Bxd2+
- 1.h8Q!
There are these afters: 75609
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- R(l);OGATE::PXR(l)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- B(c);N_PINS(C)::S(C)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- P(g);N_GUARD::P(F)
- Tries
- Try
- P(G);XP(g)
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- R(k);OGATE,XR(L)::PXR(k)=Q
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- B(c);N_PINS(C)::S(C)
- Refutation
- R(l);XR(M)
- Try
- P(J);XR(l)
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- B(c);N_PINS(C)::S(C)
- P(g);N_GUARD::P(F)
- Refutation
- P(i);
- Try
- P(J);XR(l)
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- B(c);N_PINS(C)::S(C)
- P(g);N_GUARD::P(F)
- Refutation
- P(i);
- Try
- P(J);XR(l)
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- B(c);N_PINS(C)::S(C)
- P(g);N_GUARD::P(F)
- Refutation
- P(i);
- Try
- P(J);XR(l)
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- B(c);N_PINS(C)::S(C)
- P(g);N_GUARD::P(F)
- Refutation
- P(i);
- Try
- P(J);
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- R(l);OGATE,P_SPINR(l),XP(I)::B(J),XR(l)
- R(l);OGATE,XR(M)::PXR(l)=Q
- R(l);OGATE,XB(J)::PXR(l)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- B(c);N_PINS(C)::S(C)
- P(g);N_GUARD::P(F)
- Refutation
- P(i);
- Try
- Actual
- P(J);
- Vars
- B(c);CHECK,XS(C)::QAB(A)+K(E),XB(c)
- P(g);CHECK,P_PINP(H),XP(G)::QAB(A)+K(E),XP(g)
- R(k);OGATE,P_SPINR(k),XP(H)::B(K),XR(k)
- R(k);OGATE,XB(K)::PXR(k)=Q
- R(k);OGATE,XR(L)::PXR(k)=Q
- R(l);OGATE,P_SPINR(l),XP(I)::QAB(J),XR(l)
- R(l);OGATE,XR(M)::PXR(l)=Q
- R(l);OGATE,XQ(J)::PXR(l)=Q
- B(a);XP(B)::QAB(A)+K(E),XB(a)
- S(b);XP(D)::QAB(A)+K(E),XS(b)
- S(b);XP(F)::QAB(A)+K(E),XS(b)
- P(i);OGATEB::QAR(J)
- B(c);N_PINS(C)::S(C)
- P(g);N_GUARD::P(F)
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).