MESON Chess Problem Database
Problem Display
PID: 242823 (8/1nPRBPPn/b1K1k1NN/pp1p1r2/8/8/8/8 w - - 0 1)
Bakcsi, Gyorgy
Hlas l'udu, 1991
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Sf4#
- 1...Sc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sd8+
- 2.cxd8S#
- 1...Sf6
- 2.f8S#
- 1...Sf8
- 2.gxf8S#
- 1...Re5
- Tries
- 1.Rxd5?
- threat
- 2.c8Q#
- 2.c8B#
- 1...Sd8+
- 2.cxd8S#
- 1...Rxf7
- 2.Re5#
- 2.c8Q#
- 2.c8B#
- 1...Rf1
- 2.Re5#
- 2.c8Q#
- 2.c8B#
- 1...Rf2
- 2.Re5#
- 2.c8Q#
- 2.c8B#
- 1...Rf3
- 2.Re5#
- 2.c8Q#
- 2.c8B#
- 1...Rf4
- 2.Re5#
- 2.c8Q#
- 2.c8B#
- 1...Re5
- 2.Rxe5#
- 2.c8Q#
- 2.c8B#
- 1...Rg5
- 2.c8Q#
- 2.c8B#
- 1...Rh5
- 2.c8Q#
- 2.c8B#
- 1...Rf6
- 2.Re5#
- 2.c8Q#
- 2.c8B#
- 1...Sc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sg5
- 2.c8Q#
- 2.c8B#
- 1...Sf6
- 2.f8S#
- 1...Sf8
- 2.gxf8S#
- 1...a4
- 2.c8Q#
- 2.c8B#
- 1...b4
- 2.c8Q#
- 2.c8B#
- 1...Rxd5!
- threat
- 1.c8Q?
- threat
- 2.Rxd5#
- 2.Rd6#
- 2.Rxb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sf6
- 2.Rd6#
- 2.f8S#
- 1...Sf8
- 2.Rd6#
- 2.gxf8S#
- 1...d4
- 2.Rxd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rxb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sd8+!
- threat
- 1.c8B?
- threat
- 2.Rxd5#
- 2.Rd6#
- 2.Rxb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sf6
- 2.Rd6#
- 2.f8S#
- 1...Sf8
- 2.Rd6#
- 2.gxf8S#
- 1...d4
- 2.Rxd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rxb7#
- 2.Rc7#
- 2.Rd8#
- 1...Sd8+!
- threat
- 1.g8Q?
- threat
- 2.f8S#
- 1...Sd8+
- 2.cxd8S#
- 1...Rxf7
- 2.Qxf7#
- 1...Re5
- 2.Sf4#
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Rg5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Rh5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Sf8!
- threat
- 1.g8B?
- threat
- 2.f8S#
- 1...Sd8+
- 2.cxd8S#
- 1...Rxf7
- 2.Bxf7#
- 1...Re5
- 2.Sf4#
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Rg5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Rh5
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Sf8!
- threat
- 1.Rxd5?
- Keys
- 1.Rd8!
- threat
- 2.c8Q#
- 2.c8B#
- 1...Sxd8+
- 2.cxd8S#
- 1...Rxf7
- 2.c8Q#
- 2.c8B#
- 1...Rf1
- 2.c8Q#
- 2.c8B#
- 1...Rf2
- 2.c8Q#
- 2.c8B#
- 1...Rf3
- 2.c8Q#
- 2.c8B#
- 1...Rf4
- 2.c8Q#
- 2.c8B#
- 1...Re5
- 2.c8Q#
- 2.c8B#
- 1...Rg5
- 2.c8Q#
- 2.c8B#
- 1...Rh5
- 2.c8Q#
- 2.c8B#
- 1...Rf6
- 2.c8Q#
- 2.c8B#
- 1...Sc5
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sg5
- 2.c8Q#
- 2.c8B#
- 1...Sf6
- 2.f8S#
- 1...Sf8
- 2.gxf8S#
- 1...a4
- 2.c8Q#
- 2.c8B#
- 1...b4
- 2.c8Q#
- 2.c8B#
- 1...d4
- 2.c8Q#
- 2.c8B#
- threat
- 1.Rd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(d);N_GUARD,SBLOCK::S(B)
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- S(g);CHECK,OGATE::PXS(g)=S
- S(h);N_GUARD,S_CUTR(d)::P=S
- S(h);OGATE::PXS(h)=S
- Tries
- Try
- R(E);XP(c)
- Threat
- P=Q
- Vars
- S(g);CHECK,OGATE::PXS(g)=S
- R(d);::P=Q
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- S(h);::P=Q
- S(h);N_GUARD,S_CUTR(d)::P=S
- S(h);OGATE::PXS(h)=S
- P(a);::P=Q
- P(b);::P=Q
- Refutation
- R(d);XR(E)
- Try
- P(D);
- Threat
- DUALS(5)
- Vars
- S(g);::QAB(D)+R(E),DCHECK
- S(g);::QAB(D)+R(E),DCHECK,XS(g)
- Refutation
- S(g);CHECK
- Try
- P(D);
- Threat
- DUALS(5)
- Vars
- S(g);::B(D)+R(E),DCHECK
- S(g);::B(D)+R(E),DCHECK,XS(g)
- Refutation
- S(g);CHECK
- Try
- P(H);
- Threat
- P=S
- Vars
- S(g);CHECK,OGATE::PXS(g)=S
- R(d);OGATE,P_SPINR(d),XP(G)::QAB1(H),XR(d)
- Refutation
- S(h);
- Try
- P(H);
- Threat
- P=S
- Vars
- S(g);CHECK,OGATE::PXS(g)=S
- R(d);OGATE,P_SPINR(d),XP(G)::B(H),XR(d)
- Refutation
- S(h);
- Try
- Actual
- R(E);
- Threat
- P=Q
- Vars
- S(g);CHECK,OGATE,XR(E)::PXS(g)=S
- R(d);XP(G)::P=Q
- R(d);::P=Q
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- S(h);::P=Q
- S(h);N_GUARD,S_CUTR(d)::P=S
- S(h);OGATE::PXS(h)=S
- P(a);::P=Q
- P(b);::P=Q
- P(c);::P=Q
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).