MESON Chess Problem Database
Problem Display
PID: 50489 (8/Q2PB2B/1n1RP3/2Nbk1Pp/1PP3nR/3P4/p5N1/6K1 w - - 0 1)
Valuska, Jan
Smer, 1964
#2
14 + 6
| 3335 | Cyclone | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Bf6#
- 1...Bf3
- 2.d4#
- 1...Bxc4
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Bxe6
- 2.d4#
- 1...Bb7
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Sf2
- 2.d4#
- 1...Sh2
- 2.d4#
- 1...Se3
- 2.d4#
- 1...Sf6
- 2.d4#
- 1...Sh6
- 2.d4#
- 1...Sa4
- 2.Rxd5#
- 1...Sxd7
- 2.Sxd7#
- 2.Rxd5#
- 1...Sa8
- 2.Rxd5#
- 1...Sc8
- 2.Rxd5#
- 1...a1Q+
- 2.Qxa1#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- Tries
- 1.Sb3?
- threat
- 2.d4#
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bxg2!
- threat
- 1.Sb7?
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 1...Bxc4
- 2.d4#
- 1...Bxe6
- 2.d4#
- 1...Bxb7
- 2.d4#
- 1...Sxc4
- 2.d4#
- 1...Sxd7
- 2.d4#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bf3
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Sf2
- 2.Bf6#
- 2.d4#
- 1...Sh2
- 2.Bf6#
- 2.d4#
- 1...Se3
- 2.Bf6#
- 2.d4#
- 1...Sf6
- 2.Bxf6#
- 2.d4#
- 1...Sh6
- 2.Bf6#
- 2.d4#
- 1...Sa4
- 2.d4#
- 1...Sa8
- 2.d4#
- 1...Sc8
- 2.d4#
- 1...Bxg2!
- 1...a1Q+
- 1.Rxg4?
- threat
- 2.d4#
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...hxg4!
- threat
- 1.Qa3?
- threat
- 2.Qb2#
- 2.Qc3#
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 2.Qb2#
- 1...Sxc4
- 2.Qc3#
- 1...a1B
- 2.Qxa1#
- 1...Sa4
- 2.Rxd5#
- 1...Bxg2!
- threat
- 1.Qa8?
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 2.Qh8#
- 1...Bxc4
- 2.Qe4#
- 2.d4#
- 1...Bxe6
- 2.Qe4#
- 2.d4#
- 1...Bxa8
- 2.d4#
- 1...Sxc4
- 2.Rxd5#
- 2.Qxd5#
- 1...Sxd7
- 2.Rxd5#
- 2.Qxd5#
- 1...Sxa8
- 2.Rxd5#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bf3
- 2.d4#
- 1...Be4
- 2.Qxe4#
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Bb7
- 2.d4#
- 1...Sf2
- 2.Qh8#
- 2.d4#
- 1...Sh2
- 2.Qh8#
- 2.d4#
- 1...Se3
- 2.Qh8#
- 2.d4#
- 1...Sf6
- 2.d4#
- 1...Sh6
- 2.Qh8#
- 2.d4#
- 1...Sa4
- 2.Rxd5#
- 2.Qxd5#
- 1...Sc8
- 2.Rxd5#
- 2.Qxd5#
- 1...Bxg2!
- 1...a1Q+
- 1.d8Q?
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 2.Qh8#
- 1...Bxc4
- 2.d4#
- 1...Bxe6
- 2.Rxe6#
- 2.d4#
- 1...Sxc4
- 2.Sd7#
- 2.Rxd5#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bf3
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Bb7
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Sf2
- 2.Bf6#
- 2.Qh8#
- 2.d4#
- 1...Sh2
- 2.Bf6#
- 2.Qh8#
- 2.d4#
- 1...Se3
- 2.Bf6#
- 2.Qh8#
- 2.d4#
- 1...Sf6
- 2.Bxf6#
- 2.d4#
- 1...Sh6
- 2.Bf6#
- 2.Qh8#
- 2.d4#
- 1...Sa4
- 2.Sd7#
- 2.Rxd5#
- 1...Sd7
- 2.Sxd7#
- 2.Rxd5#
- 1...Sa8
- 2.Sd7#
- 2.Rxd5#
- 1...Sc8
- 2.Sd7#
- 2.Rxd5#
- 1...Bxg2!
- 1...a1Q+
- 1.d8S?
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 1...Bxc4
- 2.Sc6#
- 2.Sf7#
- 2.d4#
- 1...Bxe6
- 2.Sc6#
- 2.d4#
- 1...Sxc4
- 2.Sd7#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bf3
- 2.Sf7#
- 2.d4#
- 1...Be4
- 2.Sf7#
- 2.d4#
- 1...Bc6
- 2.Sxc6#
- 2.Sf7#
- 2.d4#
- 1...Bb7
- 2.Sf7#
- 2.d4#
- 1...Ba8
- 2.Sf7#
- 2.d4#
- 1...Sf2
- 2.Sf7#
- 2.d4#
- 1...Sh2
- 2.Sf7#
- 2.d4#
- 1...Se3
- 2.Sf7#
- 2.d4#
- 1...Sf6
- 2.Sf7#
- 2.d4#
- 1...Sh6
- 2.d4#
- 1...Sa4
- 2.Sd7#
- 2.Rxd5#
- 1...Sd7
- 2.Sxd7#
- 2.Rxd5#
- 1...Sa8
- 2.Sd7#
- 2.Rxd5#
- 1...Sc8
- 2.Sd7#
- 2.Rxd5#
- 1...Bxg2!
- 1...a1Q+
- 1.d8B?
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 1...Bxc4
- 2.d4#
- 1...Bxe6
- 2.d4#
- 1...Sxc4
- 2.Sd7#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bf3
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Bb7
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Sf2
- 2.d4#
- 1...Sh2
- 2.d4#
- 1...Se3
- 2.d4#
- 1...Sf6
- 2.d4#
- 1...Sh6
- 2.d4#
- 1...Sa4
- 2.Sd7#
- 2.Rxd5#
- 1...Sd7
- 2.Sxd7#
- 2.Rxd5#
- 1...Sa8
- 2.Sd7#
- 2.Rxd5#
- 1...Sc8
- 2.Sd7#
- 2.Rxd5#
- 1...Bxg2!
- 1...a1Q+
- 1.d8R?
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Bf6#
- 1...Bxc4
- 2.d4#
- 1...Bxe6
- 2.Rxe6#
- 2.d4#
- 1...Sxc4
- 2.Sd7#
- 2.Rxd5#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bf3
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bc6
- 2.d4#
- 1...Bb7
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Sf2
- 2.Bf6#
- 2.d4#
- 1...Sh2
- 2.Bf6#
- 2.d4#
- 1...Se3
- 2.Bf6#
- 2.d4#
- 1...Sf6
- 2.Bxf6#
- 2.d4#
- 1...Sh6
- 2.Bf6#
- 2.d4#
- 1...Sa4
- 2.Sd7#
- 2.Rxd5#
- 1...Sd7
- 2.Sxd7#
- 2.Rxd5#
- 1...Sa8
- 2.Sd7#
- 2.Rxd5#
- 1...Sc8
- 2.Sd7#
- 2.Rxd5#
- 1...Bxg2!
- 1...a1Q+
- 1.Sb3?
- Keys
- 1.Se4!
- 1...a1Q+
- 2.Qxa1#
- 1...a1R+
- 2.Qxa1#
- 1...Kd4
- 2.Rxd5#
- 1...Bxc4
- 2.d4#
- 1...Bxe4
- 2.d4#
- 1...Bxe6
- 2.d4#
- 1...Sxc4
- 2.d4#
- 1...Sxd7
- 2.d4#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...Bc6
- 2.d4#
- 1...Bb7
- 2.d4#
- 1...Ba8
- 2.d4#
- 1...Sf2
- 2.Bf6#
- 1...Sh2
- 2.Bf6#
- 1...Se3
- 2.Bf6#
- 1...Sf6
- 2.Bxf6#
- 1...Sh6
- 2.Bf6#
- 1...Sa4
- 2.d4#
- 1...Sa8
- 2.d4#
- 1...Sc8
- 2.d4#
- 1...a1Q+
- 1.Se4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 9
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- K(d);P_SPINB(c),P_SPINS(b),S_FLIGHT::B(M)
- B(c);::P(C)
- B(c);XP(E)::P(C)
- B(c);XP(J)::P(C)
- S(b);::P(C)
- S(f);N_GUARD::R1(I),XB(c)
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- Tries
- Try
- S(G);
- Threat
- P(C)
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- P(a);OGATE::QAB(K),XB(a)
- Refutation
- B(c);XS(B)
- Try
- S(G);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- K(d);P_SPINB(c),P_SPINS(b),S_FLIGHT::B(M)
- B(c);XP(E)::P(C)
- B(c);XP(J)::P(C)
- B(c);XS(G)::P(C)
- S(f);XP(E)::P(C)
- S(f);XP(L)::P(C)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- B(c);::P(C)
- S(f);::P(C)
- Refutation
- B(c);XS(B)
- Try
- R(F);XS(b)
- Threat
- P(C)
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- P(a);OGATE::QAB(K),XB(a)
- Refutation
- P(e);XR(F)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- S(f);XP(E)::QAB(K)
- P(a);OGATE::QAB(K),XB(a)
- S(f);N_GUARD::R1(I),XB(c)
- Refutation
- B(c);XS(B)
- Try
- Q(K);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- B(c);XQ(K)::P(C)
- S(f);N_GUARD,XQ(K)::R1(I),XB(c)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- B(c);::P(C)
- S(b);::P(C)
- Refutation
- B(c);XS(B)
- Try
- P(L);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- B(c);XP(E)::P(C)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- B(c);::P(C)
- Refutation
- B(c);XS(B)
- Try
- P(L);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- K(d);P_SPINB(c),P_SPINS(b),S_FLIGHT::B(M)
- S(f);N_GUARD,XP(E)::S(G)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- S(b);::P(C)
- Refutation
- B(c);XS(B)
- Try
- P(L);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- K(d);P_SPINB(c),P_SPINS(b),S_FLIGHT::B(M)
- B(c);XP(E)::P(C)
- B(c);XP(J)::P(C)
- S(f);N_GUARD,XP(E)::S(G)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- B(c);::P(C)
- S(b);::P(C)
- Refutation
- B(c);XS(B)
- Try
- P(L);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- K(d);P_SPINB(c),P_SPINS(b),S_FLIGHT::B(M)
- B(c);XP(E)::P(C)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- B(c);::P(C)
- Refutation
- B(c);XS(B)
- Try
- Actual
- S(G);
- Vars
- P(a);CHECK,OGATE::QAB(K),XQ(a)
- P(a);CHECK,OGATE::QAB(K),XR(a)
- K(d);P_SPINB(c),P_SPINS(f),S_FLIGHT::R1(I),XB(c)
- B(c);XP(E)::P(C)
- B(c);XS(G)::P(C)
- B(c);XP(J)::P(C)
- S(f);XP(E)::P(C)
- S(f);XP(L)::P(C)
- P(a);OGATE::QAB(K),XS(a)
- P(a);OGATE::QAB(K),XB(a)
- B(c);::P(C)
- S(b);N_GUARD::B(M)
- S(b);N_GUARD::B(M),XS(b)
- S(f);::P(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).