MESON Chess Problem Database
Problem Display
PID: 139025 (BBn5/3Pb3/7R/4Nk1P/3pNP1R/2q3PK/3p3p/7Q w - - 0 1)
Guida, Marco
L'Italia Scacchistica, 2006
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qb2
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qb4
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qa5
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qa3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qd3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qe3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qf3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qxg3+
- 2.Sxg3#
- 1...Ba3
- 2.Rf6#
- 1...Bb4
- 2.Rf6#
- 1...Bc5
- 2.Rf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bd6
- 2.Rf6#
- 1...Bf6
- 2.Rxf6#
- 1...Bf8
- 2.Rf6#
- 1...Qa1
- Tries
- 1.Sxc3?
- threat
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxh4
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...dxc3
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1Q
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1S
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1B
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1R
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Ba3
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bb4
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bc5
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bg5
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bd6
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bd8
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bf8
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Sb6
- 2.Be4#
- 2.Qe4#
- 1...Sa7
- 2.Be4#
- 2.Qe4#
- 1...d3
- 2.Be4#
- 2.Qe4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Sd6!
- threat
- 1.Sd6+?
- 1...Bxd6
- 2.Be4#
- 2.Qe4#
- 1...Sxd6!
- 1...Bxd6
- 1.Sf3?
- threat
- 2.g4#
- 1...Qxf3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qc6
- 2.Sxd4#
- 1...Bf6
- 2.Rxf6#
- 1...Qc7
- 2.Sxd4#
- 1...Bd6
- 2.Rf6#
- 1...Sd6!
- threat
- 1.Sxc3?
- Keys
- 1.Sc6!
- threat
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qxg3+
- 2.Sxg3#
- 1...Qxc6
- 2.g4#
- 1...Bxh4
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qf3
- 2.Sxd4#
- 1...Bf6
- 2.Rxf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1Q
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1S
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1B
- 2.dxc8Q#
- 2.dxc8B#
- 1...d1R
- 2.dxc8Q#
- 2.dxc8B#
- 1...Sd6
- 2.Sxe7#
- 1...Qa1
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qb2
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qb4
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qa5
- 2.Sxd4#
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qc1
- 2.Sxd4#
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qc2
- 2.Sxd4#
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qa3
- 2.Sxd4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qb3
- 2.Sxd4#
- 1...Qd3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qe3
- 2.dxc8Q#
- 2.dxc8B#
- 1...Qc4
- 2.g4#
- 1...Qc5
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Ba3
- 2.Rf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bb4
- 2.Rf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bc5
- 2.Rf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bg5
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bd6
- 2.Rf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bd8
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bf8
- 2.Rf6#
- 2.dxc8Q#
- 2.dxc8B#
- 1...Sb6
- 2.Sxe7#
- 1...Sa7
- 2.Sxe7#
- 1...d3
- 2.g4#
- 2.dxc8Q#
- 2.dxc8B#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD,N_PINP(B)::PXS(g)=Q
- Q(c);N_GUARD::PXS(g)=Q
- Q(c);CHECK,XP(B)::S(D),XQ(c)
- B(f);N_GUARD::R1(I)
- B(f);N_GUARD::R1(I),XB(f)
- Tries
- Try
- S(D);N_SPINP(B),XQ(c)
- Threat
- DUALS(4)
- Refutation
- S(g);
- Try
- S(D);CHECK
- Refutation
- S(g);XS(D)
- Try
- S(G);N_SPINP(B)
- Threat
- P(B)
- Vars
- Q(c);N_GUARD,P_PINP(B),XS(G)::PXS(g)=Q
- Q(c);N_GUARD::S(G),XP(d)
- B(f);N_GUARD::R1(I),XB(f)
- B(f);N_GUARD::R1(I)
- Refutation
- S(g);
- Try
- Actual
- S(G);
- Threat
- PXS(g)=Q
- Vars
- Q(c);CHECK,XP(B)::S(D),XQ(c)
- Q(c);N_PINP(B),XS(G)::P(B)
- B(f);XR(F)::PXS(g)=Q
- Q(c);N_GUARD::S(G),XP(d)
- P(a);::PXS(g)=Q
- S(g);N_GUARD::S(G),XB(f)
- Q(c);::PXS(g)=Q
- Q(c);N_PINP(B)::P(B)
- B(f);::PXS(g)=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).