MESON Chess Problem Database
Problem Display
PID: 276090 (rR3R2/pbPpPq2/1PPk2N1/2N3Bn/B1PP4/8/1K2p3/8 w - - 0 1)
Armeni, Alberto
Phenix, 2002
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.e8S#
- 1...Qe6
- 2.Sxb7#
- 1...Qg8
- 2.e8S#
- 1...Qf1
- 2.e8S#
- 1...Qf2
- 2.e8S#
- 1...Qf3
- 2.e8S#
- 1...Qf4
- 2.e8S#
- 1...Qf5
- 2.e8S#
- 1...Qf6
- 2.e8S#
- 1...Qxe7
- 2.Bxe7#
- 1...Qg7
- 2.e8S#
- 1...Qh7
- 2.e8S#
- 1...Qxf8
- 2.exf8Q#
- 2.exf8B#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxc6
- 2.c8S#
- 1...Sf6
- 2.Bf4#
- 1...dxc6
- 2.Rfd8#
- 1...Qd5
- Tries
- 1.Bf4+?
- 1...Qxf4
- 2.e8S#
- 1...Sxf4!
- 1...Qxf4
- 1.c8Q?
- threat
- 2.Qxd7#
- 2.Qc7#
- 1...Qxc4
- 2.Qxd7#
- 1...Qxe7
- 2.Bxe7#
- 2.Qc7#
- 1...Bxc6
- 2.Qc7#
- 1...axb6
- 2.Qxd7#
- 1...dxc6
- 2.Se4#
- 2.Sxb7#
- 2.Rd8#
- 2.Qd7#
- 2.Qc7#
- 2.Qd8#
- 1...Qe6
- 2.Sxb7#
- 2.Qc7#
- 1...Qe8
- 2.Qc7#
- 1...Qf5
- 2.Qc7#
- 2.e8S#
- 1...Sf6
- 2.Bf4#
- 2.Qc7#
- 1...Bxc8!
- threat
- 1.e8Q?
- threat
- 2.Se4#
- 2.Sxb7#
- 2.Qe5#
- 1...Qxc4
- 2.Qxd7#
- 2.Qe5#
- 1...Qxg6
- 2.Sxb7#
- 2.Be7#
- 2.Qxd7#
- 2.Qe5#
- 2.Qe7#
- 1...Rxb8
- 2.Se4#
- 2.Qe5#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxc6
- 2.Qe5#
- 2.c8S#
- 1...axb6
- 2.Qe5#
- 1...e1Q
- 2.Sxb7#
- 1...e1R
- 2.Sxb7#
- 1...Qd5
- 2.Sxb7#
- 2.Be7#
- 2.Qxd7#
- 2.Qe7#
- 1...Qe6
- 2.Sxb7#
- 1...Qf3
- 2.Sxb7#
- 2.Be7#
- 2.Qxd7#
- 2.Qe5#
- 2.Qe7#
- 1...Qf4
- 2.Sxb7#
- 2.Be7#
- 2.Qxd7#
- 2.Qe7#
- 1...Qf5
- 2.Sxb7#
- 2.Be7#
- 2.Qe7#
- 1...Qf6
- 2.Se4#
- 2.Sxb7#
- 2.Qxd7#
- 1...Qe7
- 2.Bxe7#
- 2.Qxe7#
- 1...Qg7
- 2.Se4#
- 2.Sxb7#
- 1...Ba6
- 2.Se4#
- 2.Qe5#
- 1...Bc8
- 2.Se4#
- 2.Qe5#
- 1...Sg3
- 2.Sxb7#
- 2.Qe5#
- 1...Sf6
- 2.Sxb7#
- 2.Bf4#
- 2.Qe5#
- 1...Qxe8!
- threat
- 1.Bf4+?
- Keys
- 1.cxd7!
- threat
- 2.d8Q#
- 2.d8R#
- 1...Qxc4
- 2.d8Q#
- 2.d8R#
- 1...Qxg6
- 2.d8Q#
- 2.d8R#
- 1...Qxe7
- 2.Bxe7#
- 1...Qxf8
- 2.exf8Q#
- 2.exf8B#
- 1...Rxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...e1Q
- 2.d8Q#
- 2.d8R#
- 1...e1S
- 2.d8Q#
- 2.d8R#
- 1...e1B
- 2.d8Q#
- 2.d8R#
- 1...e1R
- 2.d8Q#
- 2.d8R#
- 1...Qd5
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qe6
- 2.Sxb7#
- 1...Qe8
- 2.dxe8S#
- 1...Qg8
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qf1
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qf2
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qf3
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qf4
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qf5
- 2.e8S#
- 1...Qf6
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qg7
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Qh7
- 2.d8Q#
- 2.d8R#
- 2.e8S#
- 1...Bh1
- 2.c8S#
- 2.d8Q#
- 2.d8R#
- 1...Bg2
- 2.c8S#
- 2.d8Q#
- 2.d8R#
- 1...Bf3
- 2.c8S#
- 2.d8Q#
- 2.d8R#
- 1...Be4
- 2.c8S#
- 2.d8Q#
- 2.d8R#
- 1...Bd5
- 2.c8S#
- 2.d8Q#
- 2.d8R#
- 1...Ba6
- 2.d8Q#
- 2.d8R#
- 1...Bc6
- 2.c8S#
- 1...Bc8
- 2.dxc8S#
- 1...Sg3
- 2.d8Q#
- 2.d8R#
- 1...Sf4
- 2.d8Q#
- 2.d8R#
- 1...Sf6
- 2.Bf4#
- 1...Sg7
- 2.d8Q#
- 2.d8R#
- 1...a5
- 2.d8Q#
- 2.d8R#
- 1...a6
- 2.d8Q#
- 2.d8R#
- threat
- 1.cxd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(g);N_GUARD::P=S
- Q(g);SBLOCK::S(E),XB(e)
- Q(g);N_GUARD,P_PINP(D)::P=S
- Q(g);OGATE,XP(K)::B(F),XQ(g)
- Q(g);OGATE,XR(M)::PXQ(g)=Q
- R(h);OGATE,XR(L)::PXR(h)=Q
- B(e);N_GUARD,XP(H)::P=S
- S(b);N_GUARD,S_CUTQ(g)::B(F)
- P(f);OGATEB,XP(H)::R(M)
- Tries
- Try
- B(F);CHECK
- Vars
- Q(g);N_GUARD,S_CUTS(b),XB(F)::P=S
- Refutation
- S(b);XB(F)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- Q(g);XP(C)::QAR1(J),XP(f)
- B(e);XP(H)::QAB1(J)
- P(d);XP(G)::QAR1(J),XP(f)
- Q(g);::QAB1(J)
- Refutation
- B(e);XQ(J)
- Try
- P(K);
- Threat
- DUALS(3)
- Vars
- P(d);XP(G)::QAB1(K)
- P(a);::S(E),XB(e)
- Q(g);::S(E),XB(e)
- Refutation
- Q(g);XQ(K)
- Try
- Actual
- P(H);XP(f)
- Threat
- P=Q
- Vars
- Q(g);XP(C)::P=Q
- Q(g);XS(I)::P=Q
- Q(g);OGATE,XP(K)::B(F),XQ(g)
- Q(g);OGATE,XR(M)::PXQ(g)=Q
- R(h);OGATE,XR(L)::PXR(h)=Q
- P(a);::P=Q
- Q(g);SBLOCK::S(E),XB(e)
- Q(g);OGATE::PXQ(g)=S
- Q(g);N_GUARD::P=S
- B(e);::P=Q
- B(e);N_GUARD::P=S
- B(e);OGATE::PXB(e)=S
- S(b);::P=Q
- S(b);N_GUARD,S_CUTQ(g)::B(F)
- P(d);::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).