MESON Chess Problem Database
Problem Display
PID: 238843 (4N3/4pQ1b/3p4/2RPp1K1/Bn1Pk1p1/5N2/2P2Bp1/1n6 w - - 0 1)
Labai, Zoltan
L'Italia Scacchistica, 2004
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bf5
- 2.Qxf5#
- 1...Bg8
- 2.Qf5#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 1...Sc3
- 2.Sd2#
- 1...Sxc2
- 2.Bxc2#
- 1...Sxd5
- 2.Qxd5#
- 1...gxf3
- 2.Qxh7#
- 1...exd4
- 2.Qf4#
- 1...e6
- 2.Sxd6#
- 1...Bf5
- Tries
- 1.Se1?
- threat
- 2.Qxh7#
- 1...exd4
- 2.Qe6#
- 2.Qf4#
- 2.Qxe7#
- 1...Bf5
- 2.Qxf5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 2.Qf5#
- 1...dxc5!
- threat
- 1.Sg1?
- threat
- 2.Qxh7#
- 1...exd4
- 2.Qe6#
- 2.Qf4#
- 2.Qxe7#
- 1...Bf5
- 2.Qxf5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 2.Qf5#
- 1...dxc5!
- threat
- 1.Sh2?
- threat
- 2.Qxh7#
- 1...exd4
- 2.Qe6#
- 2.Qf4#
- 2.Qxe7#
- 1...Bf5
- 2.Qxf5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 2.Qf5#
- 1...dxc5!
- threat
- 1.Sh4?
- threat
- 2.Qxh7#
- 1...exd4
- 2.Qe6#
- 2.Qf4#
- 2.Qxe7#
- 1...Bf5
- 2.Qxf5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 2.Qf5#
- 1...dxc5!
- threat
- 1.dxe5?
- threat
- 2.Rc4#
- 2.Qf4#
- 1...Sxc2
- 2.Bxc2#
- 1...Sxd5
- 2.Rc4#
- 2.Qxd5#
- 1...gxf3
- 2.Qf4#
- 1...dxe5
- 2.Rc4#
- 1...Bf5
- 2.Qxf5#
- 1...Sd2
- 2.Qf4#
- 1...Sa3
- 2.Qf4#
- 1...Sd3
- 2.Rc4#
- 1...Sc6
- 2.Qf4#
- 1...e6
- 2.Sxd6#
- 2.Qf4#
- 1...dxc5!
- threat
- 1.Se1?
- Keys
- 1.Rc3!
- threat
- 2.Re3#
- 1...Sxc3
- 2.Sd2#
- 1...Sxc2
- 2.Bxc2#
- 1...Sxd5
- 2.Qxh7#
- 1...gxf3
- 2.Qxf3#
- 1...exd4
- 2.Qe6#
- 1...e6
- 2.Sf6#
- 1...Sd3
- 2.cxd3#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB1(I)
- S(a);N_GUARD::S(C),XS(a)
- S(a);N_GUARD::S(C)
- S(c);OGATE,XP(A)::B(D),XS(c)
- S(c);OGATE,XP(G)::QAB1(I),XS(c)
- P(e);SBLOCK,XS(C)::QAB(I),XB(i)
- P(f);N_GUARD,XP(E)::QAR1(I)
- P(h);N_GUARD::S(J),XP(g)
- Tries
- Try
- S(C);
- Threat
- QAB(I),XB(i)
- Vars
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB(I),XB(i)
- Refutation
- P(g);XR(F)
- Try
- S(C);
- Threat
- QAB(I),XB(i)
- Vars
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB(I),XB(i)
- Refutation
- P(g);XR(F)
- Try
- S(C);
- Threat
- QAB(I),XB(i)
- Vars
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB(I),XB(i)
- Refutation
- P(g);XR(F)
- Try
- S(C);
- Threat
- QAB(I),XB(i)
- Vars
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB(I),XB(i)
- Refutation
- P(g);XR(F)
- Try
- P(E);XP(f)
- Threat
- DUALS(2)
- Vars
- S(c);OGATE,XP(A)::B(D),XS(c)
- P(e);XS(C)::QAR1(I)
- P(g);XP(E)::R(F)
- B(i);N_GUARD::QAB1(I),XB(i)
- S(a);::QAR1(I)
- S(c);::R(F)
- S(c);::QAR1(I)
- Refutation
- P(g);XR(F)
- Try
- Actual
- R(F);
- Threat
- R1(F)
- Vars
- S(a);N_GUARD,XR(F)::S(C)
- S(c);OGATE,XP(A)::B(D),XS(c)
- S(c);SBLOCK,XP(G)::QAB(I),XB(i)
- P(e);OGATE,XS(C)::QAB1(I),XP(e)
- P(f);OGATEB,XP(E)::QAR2(I)
- P(h);N_GUARD::S(J)
- S(c);OGATE::P(A),XS(c)
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).