MESON Chess Problem Database
Problem Display
PID: 238977 (1r3RB1/QP1R2p1/2P2N2/K2pkpBP/3N4/2nprbn1/5P1q/8 w - - 0 1)
Petite, Efren
Pat a Mat, 2002
#2
12 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Sxf3#
- 1...Re2
- 2.Sxf3#
- 1...Re4
- 2.Sxf3#
- 1...Rxb7
- 2.Re8#
- 1...Re8
- 2.Rxe8#
- 1...Bd1
- 2.f4#
- 1...Bh1
- 2.f4#
- 1...Be2
- 2.f4#
- 1...Bg2
- 2.f4#
- 1...Be4
- 2.f4#
- 1...Bg4
- 2.f4#
- 1...Bxh5
- 2.f4#
- 1...Sce4
- 2.Rxd5#
- 1...Re1
- Tries
- 1.Se6?
- threat
- 2.Bf4#
- 2.Qd4#
- 2.Qxb8#
- 1...Rxb7
- 2.Bf4#
- 2.Qd4#
- 1...Rxf8
- 2.Qd4#
- 1...Sxh5
- 2.Qd4#
- 2.Qxb8#
- 1...gxf6
- 2.Qd4#
- 1...Qh4
- 2.Qxb8#
- 1...Re4
- 2.Qxb8#
- 1...Ra8
- 2.Bf4#
- 1...Rc8
- 2.Bf4#
- 2.Qd4#
- 1...Rd8
- 2.Bf4#
- 2.Qd4#
- 1...Re8
- 2.Bf4#
- 2.Qd4#
- 1...Sce2
- 2.Qxb8#
- 1...Sce4
- 2.Bf4#
- 2.Rxd5#
- 2.Qd4#
- 1...Sb5
- 2.Bf4#
- 1...Sf1
- 2.Qd4#
- 2.Qxb8#
- 1...Sh1
- 2.Qd4#
- 2.Qxb8#
- 1...Sge2
- 2.Qxb8#
- 1...Sge4
- 2.Qd4#
- 1...d4
- 2.Bf4#
- 2.Qxd4#
- 2.Qxb8#
- 1...f4!
- threat
- 1.Se8?
- threat
- 2.Re7#
- 1...Ke4
- 2.Re7#
- 1...Rxe8
- 2.Rxe8#
- 1...Rxb7!
- threat
- 1.Rxb8?
- threat
- 2.Re8#
- 1...Bxh5
- 2.f4#
- 1...Qxh5!
- threat
- 1.Rfd8?
- threat
- 2.Re7#
- 1...Rxb7
- 2.Re8#
- 1...Rxd8!
- threat
- 1.Qc5?
- threat
- 2.Re7#
- 1...Rxb7
- 2.Re8#
- 1...Re8
- 2.Rxe8#
- 1...Ra8+!
- threat
- 1.c7?
- threat
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qxf2
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qxh5
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rxb7
- 2.Sc6#
- 2.Re8#
- 1...Rxf8
- 2.Sc6#
- 1...Bxh5
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxh5
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re8
- 2.Sc6#
- 2.Rxe8#
- 1...Qg1
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qh1
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qg2
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qh3
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qh4
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re1
- 2.Sxf3#
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re2
- 2.Sxf3#
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re4
- 2.Sxf3#
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Ra8
- 2.Sc6#
- 1...Rc8
- 2.Sc6#
- 1...Rd8
- 2.Sc6#
- 1...Bd1
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bh1
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Be2
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bg2
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Be4
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bg4
- 2.Sc6#
- 2.f4#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sb1
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sd1
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sa2
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sce2
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sa4
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sce4
- 2.Sc6#
- 2.Rxd5#
- 1...Sb5
- 2.Sc6#
- 1...Sf1
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sh1
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sge2
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sge4
- 2.Sc6#
- 1...d2
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...f4
- 2.cxb8Q#
- 2.cxb8B#
- 1...g6
- 2.Sc6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...gxf6!
- threat
- 1.Se6?
- Keys
- 1.Se4!
- threat
- 2.Re7#
- 1...Kxe4
- 2.Re7#
- 1...Rxe4
- 2.Sxf3#
- 1...Rxb7
- 2.Re8#
- 1...Bxe4
- 2.f4#
- 1...Scxe4
- 2.Rxd5#
- 1...Sgxe4
- 2.Rxf5#
- 1...dxe4
- 2.Qxb8#
- 1...fxe4
- 2.Bf4#
- 1...Re8
- 2.Rxe8#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(d);N_GUARD::S(B),XB(e)
- R(k);N_GUARD,XP(I)::R(K)
- R(k);N_GUARD::R(K),XR(k)
- B(e);OGATE::P(A)
- B(e);OGATE,XP(E)::P(A)
- S(b);N_GUARD,S_CUTB(e)::R1(J),XP(g)
- Tries
- Try
- S(B);
- Threat
- DUALS(3)
- Vars
- R(k);XR(K)::QAB1(H)
- P(j);XS(G)::QAB1(H)
- Q(a);::QAB(H),XR(k)
- R(d);::QAB(H),XR(k)
- R(k);P_PINQ(H)::B(D)
- S(b);::QAB(H),XR(k)
- S(b);::B(D)
- S(f);::QAB(H),XR(k)
- S(f);::QAB1(H)
- Refutation
- P(i);
- Try
- S(G);
- Threat
- R(J)
- Vars
- K(h);P-FLIGHT::R(J)
- R(k);OGATE,XS(G)::R(K),XR(k)
- Refutation
- R(k);XP(I)
- Try
- R(K);XR(k)
- Threat
- R(K)
- Vars
- B(e);OGATE,XP(E)::P(A)
- Refutation
- Q(a);XP(E)
- Try
- R(K);
- Threat
- R(J)
- Vars
- R(k);N_GUARD,XP(I)::R(K)
- Refutation
- R(k);XR(K)
- Try
- Q(H);P_PINP(g)
- Threat
- R(J)
- Vars
- R(k);N_GUARD,XP(I)::R(K)
- R(k);N_GUARD::R(K),XR(k)
- Refutation
- R(k);CHECK
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- R(k);XR(K)::S(B)
- R(k);P_PINQ(H)::S(B)
- R(k);::S(B)
- S(b);::S(B)
- S(f);::S(B)
- P(i);::PXR(k)=Q
- Refutation
- P(j);XS(G)
- Try
- Actual
- S(G);
- Threat
- R(J)
- Vars
- K(h);P-FLIGHT,XS(G)::R(J)
- R(d);N_GUARD,SBLOCK,XS(G)::S(B),XB(e)
- R(k);N_GUARD,XP(I)::R(K)
- B(e);OGATE,SBLOCK,XS(G)::P(A)
- S(b);N_GUARD,SBLOCK,XS(G)::R1(J),XP(g)
- S(f);N_GUARD,SBLOCK,XS(G)::R1(K),XP(i)
- P(g);SBLOCK,XS(G)::QAB(H),XR(k)
- P(i);SBLOCK,XS(G)::B(D)
- R(k);N_GUARD::R(K),XR(k)
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).