MESON Chess Problem Database
Problem Display
PID: 99588 (1R2K3/3P1P1R/2n1k1n1/4P3/4Q3/4N2b/q6r/3B4 w - - 0 1)
Gallai, Janos
Budapesti Sakkszovetseg, 1965
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qd5#
- 1...Qb3
- 2.Bxb3#
- 1...Qd5
- 2.Qxd5#
- 1...Qa1
- 2.Bb3#
- 2.Qd5#
- 1...Qb2
- 2.Qd5#
- 1...Qc2
- 2.Qd5#
- 1...Qe2
- 2.Qd5#
- 1...Qf2
- 2.Bb3#
- 2.Qd5#
- 1...Qg2
- 2.Bb3#
- 1...Qa3
- 2.Qd5#
- 1...Qa4
- 2.Qd5#
- 1...Qa6
- 2.Qd5#
- 1...Qa7
- 2.Bb3#
- 2.Qd5#
- 1...Qa8
- 2.Bb3#
- 2.Qd5#
- 1...Bf1
- 2.Bg4#
- 2.Qf5#
- 1...Bg2
- 2.Bg4#
- 2.Qf5#
- 1...Bg4
- 2.Bxg4#
- 1...Bf5
- 2.Qxf5#
- 1...Sb4
- 2.d8S#
- 1...Sd4
- 2.d8S#
- 1...Sa5
- 2.d8S#
- 1...Scxe5
- 2.Rb6#
- 1...Sa7
- 2.d8S#
- 1...Sce7
- 2.d8S#
- 1...Sxb8
- 2.d8S#
- 1...Sf4
- 2.f8S#
- 1...Sh4
- 2.f8S#
- 1...Sgxe5
- 2.Rh6#
- 1...Sge7
- 2.f8S#
- 1...Sh8
- 2.f8S#
- 1...Qb1
- Tries
- 1.Sf5?
- threat
- 2.Sg7#
- 1...Scxe5
- 2.Rb6#
- 1...Sgxe5
- 2.Rh6#
- 1...Bxf5!
- threat
- 1.Rh6?
- threat
- 2.Rxg6#
- 2.f8S#
- 1...Sxe5
- 2.Rxg6#
- 2.Rb6#
- 1...Qf2
- 2.Bb3#
- 2.Qd5#
- 1...Qg2
- 2.Bb3#
- 2.f8S#
- 1...Qa3
- 2.Rxg6#
- 2.Qd5#
- 1...Rg2
- 2.f8S#
- 1...Bf5
- 2.Qxf5#
- 2.f8S#
- 1...Se7
- 2.d8S#
- 2.f8S#
- 1...Rf2!
- threat
- 1.Rb5?
- threat
- 2.Qxc6#
- 2.Qxg6#
- 1...Scxe5
- 2.Rb6#
- 1...Sgxe5
- 2.Rh6#
- 1...Qc4
- 2.Qxg6#
- 2.Qxc4#
- 1...Qb1
- 2.Qd5#
- 2.Qxc6#
- 2.Qc4#
- 1...Qd5
- 2.Qxd5#
- 1...Qc2
- 2.Qd5#
- 1...Qd2
- 2.Qxg6#
- 1...Qf2
- 2.Bb3#
- 2.Qd5#
- 2.Qxc6#
- 2.Qc4#
- 1...Qg2
- 2.Bb3#
- 1...Qa3
- 2.Qd5#
- 2.Qxg6#
- 2.Qc4#
- 1...Qa6
- 2.Bb3#
- 2.Qd5#
- 2.Qxg6#
- 2.Qc4#
- 1...Rc2
- 2.Qxg6#
- 1...Rd2
- 2.Qxg6#
- 1...Rf2
- 2.Qxc6#
- 1...Rg2
- 2.Qxc6#
- 1...Bg2
- 2.Bg4#
- 2.Qf5#
- 2.Qxg6#
- 2.Qg4#
- 1...Bf5
- 2.Qxf5#
- 2.Qxc6#
- 1...Sb4
- 2.Qxg6#
- 2.d8S#
- 1...Sd4
- 2.Qxg6#
- 2.d8S#
- 1...Sa5
- 2.Qxg6#
- 2.d8S#
- 1...Sa7
- 2.Qxg6#
- 2.d8S#
- 1...Sce7
- 2.d8S#
- 1...Sb8
- 2.Qxg6#
- 2.d8S#
- 1...Sd8
- 2.Qxg6#
- 1...Sf4
- 2.Qxc6#
- 2.f8S#
- 1...Sh4
- 2.Qxc6#
- 2.f8S#
- 1...Sge7
- 2.f8S#
- 1...Sf8
- 2.Qxc6#
- 1...Sh8
- 2.Qxc6#
- 2.f8S#
- 1...Qa8+!
- threat
- 1.d8Q?
- threat
- 2.Qf6#
- 2.Qd6#
- 2.Qd7#
- 2.Qc8#
- 1...Scxe5
- 2.Rb6#
- 2.Qb6#
- 1...Sxb8
- 2.Qf6#
- 2.Qd6#
- 1...Sgxe5
- 2.Rh6#
- 2.f8S#
- 1...Qd5
- 2.Qexd5#
- 2.Qf6#
- 2.Qdxd5#
- 1...Qd2
- 2.Qf6#
- 1...Qf2
- 2.Bb3#
- 2.Qed5#
- 2.Qdd5#
- 2.Qd6#
- 2.Qd7#
- 2.Qc8#
- 1...Qa3
- 2.Qed5#
- 2.Qf6#
- 2.Qdd5#
- 2.Qd7#
- 2.Qc8#
- 1...Qa6
- 2.Qed5#
- 2.Qf6#
- 2.Qdd5#
- 2.Qd6#
- 2.Qd7#
- 1...Qa7
- 2.Bb3#
- 2.Qed5#
- 2.Qf6#
- 2.Qdd5#
- 2.Qd6#
- 1...Rd2
- 2.Qf6#
- 1...Rf2
- 2.Qd6#
- 2.Qd7#
- 2.Qc8#
- 1...Sa7
- 2.Qf6#
- 2.Qd6#
- 2.Qd7#
- 1...Sce7
- 2.Qd6#
- 2.Qd7#
- 1...Sge7
- 2.Qd6#
- 2.Qd7#
- 2.f8S#
- 1...Sf8
- 2.Qf6#
- 2.Qd6#
- 1...Sxd8!
- threat
- 1.f8Q?
- threat
- 2.Qd6#
- 2.Qf6#
- 2.Qf7#
- 2.Qg8#
- 1...Scxe5
- 2.Rb6#
- 2.d8S#
- 1...Sgxe5
- 2.Rh6#
- 2.Qh6#
- 1...Qd5
- 2.Qxd5#
- 2.Qf6#
- 2.Qf7#
- 2.Qg8#
- 1...Qd2
- 2.Qf6#
- 2.Qf7#
- 2.Qg8#
- 1...Qf2
- 2.Bb3#
- 2.Qd5#
- 2.Qd6#
- 1...Qa3
- 2.Qd5#
- 2.Qf6#
- 2.Qf7#
- 2.Qg8#
- 1...Rd2
- 2.Qf6#
- 2.Qf7#
- 2.Qg8#
- 1...Rf2
- 2.Qd6#
- 1...Sce7
- 2.Qf6#
- 2.Qf7#
- 2.d8S#
- 1...Sd8
- 2.Qd6#
- 2.Qf6#
- 1...Sge7
- 2.Qf6#
- 2.Qf7#
- 1...Sh8
- 2.Qd6#
- 2.Qf6#
- 1...Sxf8!
- threat
- 1.Sf5?
- Keys
- 1.Rh5!
- threat
- 2.Qxc6#
- 2.Qxg6#
- 1...Scxe5
- 2.Rb6#
- 1...Sxb8
- 2.Qxg6#
- 2.d8S#
- 1...Sgxe5
- 2.Rh6#
- 1...Qc4
- 2.Qxg6#
- 2.Qxc4#
- 1...Qb1
- 2.Qd5#
- 2.Qxc6#
- 2.Qc4#
- 1...Qd5
- 2.Qxd5#
- 2.Qxg6#
- 1...Qc2
- 2.Qd5#
- 1...Qd2
- 2.Qxg6#
- 1...Qf2
- 2.Bb3#
- 2.Qd5#
- 2.Qxc6#
- 2.Qc4#
- 1...Qg2
- 2.Bb3#
- 1...Qa3
- 2.Qd5#
- 2.Qxg6#
- 2.Qc4#
- 1...Qa4
- 2.Qd5#
- 2.Qxg6#
- 1...Qa6
- 2.Qd5#
- 2.Qxg6#
- 1...Qa8
- 2.Bb3#
- 2.Qd5#
- 2.Qxg6#
- 2.Qc4#
- 1...Rc2
- 2.Qxg6#
- 1...Rd2
- 2.Qxg6#
- 1...Rf2
- 2.Qxc6#
- 1...Rg2
- 2.Qxc6#
- 1...Bg2
- 2.Bg4#
- 2.Qf5#
- 2.Qxg6#
- 2.Qg4#
- 1...Bf5
- 2.Qxf5#
- 1...Sb4
- 2.Qxg6#
- 2.d8S#
- 1...Sd4
- 2.Qxg6#
- 2.d8S#
- 1...Sa5
- 2.Qxg6#
- 2.d8S#
- 1...Sa7
- 2.Qxg6#
- 2.d8S#
- 1...Sce7
- 2.d8S#
- 1...Sd8
- 2.Qxg6#
- 1...Sf4
- 2.Qxc6#
- 2.f8S#
- 1...Sh4
- 2.Qxc6#
- 2.f8S#
- 1...Sge7
- 2.f8S#
- 1...Sf8
- 2.Qxc6#
- 1...Sh8
- 2.Qxc6#
- 2.f8S#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 17
- Sets
- Q(a);N_GUARD::QAB1(C)
- Q(a);N_GUARD::B(A),XQ(a)
- Q(a);N_GUARD::QAB1(C),XQ(a)
- Q(a);N_GUARD::B(A)
- B(c);N_GUARD::B(A),XB(c)
- B(c);N_GUARD::QAB1(C),XB(c)
- S(d);N_GUARD::P=S
- S(d);OGATEB,P_SPINS(d),XP(D)::R(H)
- S(d);N_GUARD,XR(H)::P=S
- S(f);N_GUARD::P=S
- S(f);OGATEB,P_SPINS(f),XP(D)::R(G)
- Tries
- Try
- S(B);
- Threat
- S(B)
- Vars
- S(d);OGATEB,P_SPINS(d),XP(D)::R(H)
- S(f);OGATEB,P_SPINS(f),XP(D)::R(G)
- Refutation
- B(c);XS(B)
- Try
- R(G);P_PINS(f)
- Threat
- DUALS(2)
- Vars
- R(b);::P=S
- Refutation
- R(b);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- S(d);OGATEB,P_SPINS(d),XP(D)::R(H)
- S(f);OGATEB,P_SPINS(f),XP(D)::R(G)
- Q(a);N_GUARD::QAB1(C),XQ(a)
- Q(a);N_GUARD::QAB1(C)
- Q(a);::QAR2(C),XS(f)
- Q(a);N_GUARD::B(A)
- R(b);::QAR2(C),XS(f)
- R(b);::QAR2(C),XS(d)
- S(d);N_GUARD::P=S
- S(d);::QAR2(C),XS(f)
- S(f);N_GUARD::P=S
- S(f);::QAR2(C),XS(d)
- Refutation
- Q(a);CHECK
- Try
- P(E);
- Threat
- DUALS(4)
- Vars
- Q(a);::QAR1(E)
- R(b);::QAR1(E)
- Refutation
- S(d);XQ(E)
- Try
- P(F);
- Threat
- DUALS(4)
- Vars
- R(b);::QAR1(F)
- Refutation
- S(f);XQ(F)
- Try
- Actual
- R(G);
- Threat
- DUALS(2)
- Vars
- S(d);OGATEB,P_SPINS(d),XP(D)::R(H)
- S(f);OGATEB,P_SPINS(f),XP(D)::R(G)
- Q(a);N_GUARD::QAB1(C)
- Q(a);::QAR2(C),XS(f)
- Q(a);N_GUARD::B(A)
- R(b);::QAR2(C),XS(f)
- R(b);::QAR2(C),XS(d)
- B(c);N_GUARD::QAB1(C),XB(c)
- S(d);N_GUARD::P=S
- S(d);::QAR2(C),XS(f)
- S(f);N_GUARD::P=S
- S(f);::QAR2(C),XS(d)
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).