MESON Chess Problem Database
Problem Display
PID: 109623 (4B1b1/3QP2p/3p1P1K/1p1kb3/1PR2p2/Pn2RN2/6N1/8 w - - 0 1)
Viksna, Kristaps
Latvian Championship, 1959
#2
11 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxc4
- 2.Qxb5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Bxf6
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...fxe3
- 2.Sxe3#
- 1...bxc4
- 2.Rxe5#
- 1...Kxc4
- Tries
- 1.Kh5?
- 1...Bf7+
- 2.Bxf7#
- 1...Kxc4
- 2.Qxb5#
- 1...Bxf6
- 2.Qc6#
- 1...fxe3
- 2.Sxe3#
- 1...bxc4
- 2.Rxe5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...h6!
- 1...Bf7+
- 1.Sge1?
- 1...Kxc4
- 2.Qxb5#
- 1...Bxf6
- 2.Qc6#
- 1...bxc4
- 2.Rxe5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...fxe3!
- 1...Kxc4
- 1.Sxf4+?
- 1...Kxc4
- 2.Qxb5#
- 1...Bxf4+!
- 1...Kxc4
- 1.Sgh4?
- 1...Kxc4
- 2.Qxb5#
- 1...Bxf6
- 2.Qc6#
- 1...bxc4
- 2.Rxe5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...fxe3!
- 1...Kxc4
- 1.Bh5?
- 1...Bxf6
- 2.Qc6#
- 1...fxe3
- 2.Sxe3#
- 1...bxc4
- 2.Rxe5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Kxc4!
- 1...Bxf6
- 1.Re1?
- 1...Bxf6
- 2.Qc6#
- 1...bxc4
- 2.Rxe5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Kxc4!
- 1...Bxf6
- 1.Re2?
- 1...Bxf6
- 2.Qc6#
- 1...bxc4
- 2.Rxe5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Kxc4!
- 1...Bxf6
- 1.Rc2?
- threat
- 2.Rxe5#
- 1...Bxf6
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bc3
- 2.Qc6#
- 1...Ba1
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bb2
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bd4
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...fxe3!
- threat
- 1.Rcc3?
- threat
- 2.Rxe5#
- 1...Bxc3
- 2.Qc6#
- 1...Bxf6
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bd4
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...fxe3!
- threat
- 1.Rd4+?
- 1...Bxd4
- 2.Qc6#
- 1...Sxd4!
- 1...Bxd4
- 1.Rc6?
- threat
- 2.Rxe5#
- 1...Bxf6
- 2.Sxf4#
- 2.Qxd6#
- 1...Sc5
- 2.Rxc5#
- 1...Ba1
- 2.Sxf4#
- 2.Qxd6#
- 1...Bb2
- 2.Sxf4#
- 2.Qxd6#
- 1...Bc3
- 2.Sxf4#
- 2.Qxd6#
- 1...Bd4
- 2.Sxf4#
- 2.Qxd6#
- 1...fxe3!
- threat
- 1.Rc7?
- threat
- 2.Rxe5#
- 1...Bxf6
- 2.Sxf4#
- 2.Qc6#
- 1...Sc5
- 2.Rxc5#
- 1...Ba1
- 2.Sxf4#
- 2.Qc6#
- 1...Bb2
- 2.Sxf4#
- 2.Qc6#
- 1...Bc3
- 2.Sxf4#
- 2.Qc6#
- 1...Bd4
- 2.Sxf4#
- 2.Qc6#
- 1...fxe3!
- threat
- 1.Rc8?
- threat
- 2.Rxe5#
- 1...Bxf6
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Sc5
- 2.Rxc5#
- 1...Ba1
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bb2
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bc3
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...Bd4
- 2.Sxf4#
- 2.Qc6#
- 2.Qb7#
- 1...fxe3!
- threat
- 1.Qb7+?
- 1...Kxc4
- 2.Bxb5#
- 2.Qxb5#
- 1...Ke6!
- 1...Kxc4
- 1.a4?
- 1...Kxc4
- 2.Qxb5#
- 1...Bxf6
- 2.Qc6#
- 1...fxe3
- 2.Sxe3#
- 1...bxc4
- 2.Rxe5#
- 1...Sa1
- 2.Rc5#
- 1...Ba1
- 2.Qc6#
- 1...Bb2
- 2.Qc6#
- 1...Bc3
- 2.Qc6#
- 1...Bd4
- 2.Qc6#
- 1...Be6
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...bxa4!
- 1...Kxc4
- 1.f7?
- threat
- 2.fxg8Q#
- 2.fxg8B#
- 1...Kxc4
- 2.Qxb5#
- 1...Bxf7
- 2.Bxf7#
- 1...fxe3
- 2.Sxe3#
- 2.fxg8Q#
- 2.fxg8B#
- 1...bxc4
- 2.Rxe5#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Sa1
- 2.Rc5#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Ba1
- 2.Qc6#
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bb2
- 2.Qc6#
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bc3
- 2.Qc6#
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bd4
- 2.Qc6#
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bf6
- 2.Qc6#
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bh8
- 2.Qc6#
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Sc1
- 2.Rc5#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Sd2
- 2.Rc5#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Sd4
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 2.fxg8Q#
- 2.fxg8B#
- 1...Sc5
- 2.Rxc5#
- 1...Bg7+!
- threat
- 1.Kh5?
- Keys
- 1.Qf5!
- 1...Kxc4
- 2.Qd3#
- 1...fxe3
- 2.Sxe3#
- 1...bxc4
- 2.Sxf4#
- 1...Be6
- 2.Qe4#
- 1...Bf7
- 2.Bxf7#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Kxc4
- 1.Qf5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- B(e);::QAB1(I)
- B(e);XP(G)::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- P(b);XR(C)::S(A),XP(b)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- B(h);CHECK,N_GUARD::B(K),XB(h)
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- B(e);XP(G)::QAB1(I)
- P(b);XR(C)::S(A),XP(b)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(g);
- Try
- S(A);
- Vars
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- B(e);XP(G)::QAB1(I)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(b);XR(C)
- Try
- S(A);CHECK,XP(b)
- Vars
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- Refutation
- B(e);CHECK,XS(A)
- Try
- S(A);
- Vars
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- B(e);XP(G)::QAB1(I)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(b);XR(C)
- Try
- B(K);
- Vars
- B(e);XP(G)::QAB1(I)
- P(b);XR(C)::S(A),XP(b)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- K(d);N_SPINP(f),S_FLIGHT,XR(F)
- Try
- R(C);
- Vars
- B(e);XP(G)::QAB1(I)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- K(d);N_SPINP(f),S_FLIGHT,XR(F)
- Try
- R(C);
- Vars
- B(e);XP(G)::QAB1(I)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- K(d);N_SPINP(f),S_FLIGHT,XR(F)
- Try
- R(F);
- Threat
- R1(C),XB(e)
- Vars
- B(e);::QAB1(I)
- Refutation
- P(b);XR(C)
- Try
- R(F);
- Threat
- R1(C),XB(e)
- Vars
- B(e);XR(F)::QAB1(I)
- Refutation
- P(b);XR(C)
- Try
- R(F);CHECK
- Vars
- B(e);XR(F)::QAB1(I)
- Refutation
- S(a);XR(F)
- Try
- R(F);
- Threat
- R1(C),XB(e)
- Vars
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(b);XR(C)
- Try
- R(F);
- Threat
- R1(C),XB(e)
- Vars
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(b);XR(C)
- Try
- R(F);
- Threat
- R1(C),XB(e)
- Vars
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(b);XR(C)
- Try
- Q(I);CHECK,N_PINP(f)
- Refutation
- K(d);P_SPINB(e),S_FLIGHT
- Try
- P(B);
- Vars
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- B(e);XP(G)::QAB1(I)
- P(b);XR(C)::S(A),XP(b)
- P(c);SBLOCK,XR(F)::R1(C),XB(e)
- S(a);N_GUARD::R1(F)
- B(e);::QAB1(I)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- P(c);XP(B)
- Try
- P(G);
- Threat
- PXB(h)=Q
- Vars
- K(d);N_SPINP(f),S_FLIGHT,XR(F)::QAB1(I),XP(c)
- B(h);OGATE,XP(G)::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- Refutation
- B(e);CHECK
- Try
- Actual
- Q(I);N_PINP(f),P_PINB(e)
- Vars
- K(d);N_SPINB(e),S_FLIGHT,XR(F)::QAB1(I)
- P(b);XR(C)::S(A),XP(b)
- P(c);SBLOCK,XR(F)::S(A),XP(b)
- B(h);SBLOCK::QAB1(I)
- B(h);N_GUARD::B(K),XB(h)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
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).