MESON Chess Problem Database
Problem Display
PID: 8113 (Br6/1P1N4/2R1P1n1/1N2Bn2/2Pbk3/2r1pRp1/2P1K1P1/1Q6 w - - 0 1)
Buglos, Janos
1st HM., Sakkelet, 1995
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxc2+
- 2.Qxc2#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Bc5
- 2.Sxc3#
- 1...Bxe5
- 2.Sc5#
- 1...Bb6
- 2.Sxc3#
- 1...Ba7
- 2.Sxc3#
- 1...Sfh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Sfe7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...Sf4+
- 2.Rxf4#
- 1...Sgh4
- 2.Rf4#
- 1...Sxe5
- 2.Sf6#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc2+
- Tries
- 1.Bxb8?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Bc5
- 2.Sxc5#
- 2.Sf6#
- 1...Be5
- 2.Sc5#
- 1...Bb6
- 2.Sf6#
- 1...Bf6
- 2.Sc5#
- 2.Sxf6#
- 1...Ba7
- 2.Sf6#
- 1...Bg7
- 2.Sc5#
- 1...Bh8
- 2.Sc5#
- 1...Sfh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Sfe7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...Sgh4
- 2.Rf4#
- 1...Se5
- 2.Sf6#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc4!
- 1...Rxc2+
- 1.Rxe3+?
- 1...Bxe3
- 2.Sxc3#
- 1...Sxe3
- 2.Sd6#
- 1...Rxe3+!
- 1...Bxe3
- 1.Rc5?
- threat
- 2.Sf6#
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Bxc5
- 2.Sxc3#
- 1...Rf8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Bxe5!
- threat
- 1.Ra6?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxb7
- 2.Bxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bxe5
- 2.Sc5#
- 1...Sxe5
- 2.Sf6#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8S#
- 2.bxc8B#
- 2.bxc8R#
- 1...Rd8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Re8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rf8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rg8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rh8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Bc5
- 2.Sxc3#
- 1...Bb6
- 2.Sxc3#
- 1...Ba7
- 2.Sxc3#
- 1...Sfh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Sfe7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...Sgh4
- 2.Rf4#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc4!
- 1...Rxc2+
- 1.Rb6?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxb7
- 2.Bxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bxe5
- 2.Sc5#
- 1...Bxb6
- 2.Sxc3#
- 1...Sxe5
- 2.Sf6#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8S#
- 2.bxc8B#
- 2.bxc8R#
- 1...Rd8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Re8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rf8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rg8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rh8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Bc5
- 2.Sxc3#
- 1...Sfh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Sfe7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...Sgh4
- 2.Rf4#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc4!
- 1...Rxc2+
- 1.Rc7?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxb7
- 2.Bxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bxe5
- 2.Sc5#
- 1...Sxe5
- 2.Sf6#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8S#
- 2.bxc8B#
- 2.bxc8R#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rd8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Re8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rf8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rg8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rh8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Bc5
- 2.Sxc3#
- 1...Bb6
- 2.Sxc3#
- 1...Ba7
- 2.Sxc3#
- 1...Sfh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Sfe7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...Sgh4
- 2.Rf4#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc4!
- 1...Rxc2+
- 1.Rc8?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxb7
- 2.Bxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rxc8
- 2.bxc8Q#
- 2.bxc8S#
- 2.bxc8B#
- 2.bxc8R#
- 1...Bxe5
- 2.Sc5#
- 1...Sxe5
- 2.Sf6#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Bc5
- 2.Sxc3#
- 1...Bb6
- 2.Sxc3#
- 1...Ba7
- 2.Sxc3#
- 1...Sfh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Sfe7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...Sgh4
- 2.Rf4#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc4!
- 1...Rxc2+
- 1.Bxb8?
- Keys
- 1.Rd6!
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc4
- 2.c3#
- 1...Rxb7
- 2.Bxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bxe5
- 2.Sc5#
- 1...Sxd6
- 2.Sxd6#
- 1...Sxe5
- 2.Sf6#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8S#
- 2.bxc8B#
- 2.bxc8R#
- 1...Rd8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Re8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rf8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rg8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rh8
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Bc5
- 2.Sxc3#
- 1...Bb6
- 2.Sxc3#
- 1...Ba7
- 2.Sxc3#
- 1...Sfh4
- 2.Rxd4#
- 1...Sh6
- 2.Rxd4#
- 1...Sfe7
- 2.Rxd4#
- 1...Sg7
- 2.Rxd4#
- 1...Sgh4
- 2.Rf4#
- 1...Sge7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc2+
- 1.Rd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(G),XR(a)
- B(d);N_GUARD,SBLOCK,XB(H)::S(L)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- S(g);N_GUARD::R1(E)
- S(g);SBLOCK,XB(H)::S(L)
- Tries
- Try
- B(H);XR(h)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(L)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::R1(E)
- S(g);S_CUTB(d)::S(L)
- Refutation
- R(a);XP(F)
- Try
- R(E);CHECK,XP(b)
- Vars
- B(d);XR(E)::S(G),XR(a)
- S(f);XR(E)::S(G)
- Refutation
- R(a);CHECK,XR(E)
- Try
- R(I);
- Threat
- S(L)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- B(d);N_GUARD,XR(I)::S(G),XR(a)
- Refutation
- B(d);XB(H)
- Try
- R(I);
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- R(h);OGATE,P_SPINR(h),XP(K)::B(M),XR(h)
- R(h);OGATE,XB(M)::PXR(h)=Q
- B(d);N_GUARD,SBLOCK,XB(H)::S(L)
- S(g);SBLOCK,XB(H)::S(L)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(G),XR(a)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::R1(E)
- Refutation
- R(a);XP(F)
- Try
- R(I);
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- R(h);OGATE,P_SPINR(h),XP(K)::B(M),XR(h)
- R(h);OGATE,XB(M)::PXR(h)=Q
- B(d);N_GUARD,SBLOCK,XB(H)::S(L)
- B(d);N_GUARD,XR(I)::S(G),XR(a)
- S(g);SBLOCK,XB(H)::S(L)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(G),XR(a)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::R1(E)
- Refutation
- R(a);XP(F)
- Try
- R(I);
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- R(h);OGATE,P_SPINR(h),XP(K)::B(M),XR(h)
- R(h);OGATE,XB(M)::PXR(h)=Q
- B(d);N_GUARD,SBLOCK,XB(H)::S(L)
- S(g);SBLOCK,XB(H)::S(L)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(G),XR(a)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::R1(E)
- Refutation
- R(a);XP(F)
- Try
- R(I);
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- R(h);OGATE,P_SPINR(h),XP(K)::B(M),XR(h)
- R(h);OGATE,XB(M)::PXR(h)=Q
- B(d);N_GUARD,SBLOCK,XB(H)::S(L)
- S(g);SBLOCK,XB(H)::S(L)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(G),XR(a)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::R1(E)
- Refutation
- R(a);XP(F)
- Try
- Actual
- R(I);
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- R(a);OGATE,XP(F)::QAB(A)+P(B)
- R(h);OGATE,P_SPINR(h),XP(K)::B(M),XR(h)
- R(h);OGATE,XB(M)::PXR(h)=Q
- B(d);N_GUARD,SBLOCK,XB(H)::S(L)
- S(f);XR(I)::S(G),XS(f)
- S(g);SBLOCK,XB(H)::S(L)
- R(a);OGATE::QAB(A)+P(B)
- R(a);OGATE::QAB(A)+P(B),XR(a)
- R(a);OGATE::P(B),XR(a)
- B(d);N_GUARD::S(G),XR(a)
- S(f);N_GUARD::R1(I),XB(d)
- S(g);N_GUARD::R1(E)
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).