MESON Chess Problem Database
Problem Display
PID: 87464 (3R1B2/7K/1N1nP3/2N1kn2/2P1pR1P/4p3/4P3/5Q2 w - - 0 1)
Casa, Alex
The Problemist, 1996
#2
11 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kf6
- 2.Sbd7#
- 2.Qa1#
- 1...Sg3
- 2.Bg7#
- 1...Sd4
- 2.Sbd7#
- 2.Bxd6#
- 2.Bg7#
- 1...Sxh4
- 2.Bg7#
- 1...Sh6
- 2.Bg7#
- 1...Se7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sxc4
- 2.Rxf5#
- 1...Sb5
- 2.Rxf5#
- 1...Sb7
- 2.Rxf5#
- 1...Sf7
- 2.Rxf5#
- 1...Sc8
- 2.Rxf5#
- 1...Se8
- 2.Rxf5#
- 1...Kf6
- Tries
- 1.Scd7+?
- 1...Kd4
- 2.Qa1#
- 1...Kxe6!
- 1...Kd4
- 1.Sd5?
- 1...Sxh4
- 2.Bg7#
- 2.Qa1#
- 1...Sxc4
- 2.Rxe4#
- 1...Sg3
- 2.Bg7#
- 2.Qa1#
- 1...Sd4
- 2.Bxd6#
- 2.Bg7#
- 1...Sh6
- 2.Bg7#
- 2.Qa1#
- 1...Se7
- 2.Bg7#
- 2.Qa1#
- 1...Sg7
- 2.Bxg7#
- 2.Qa1#
- 1...Sb5
- 2.Rxe4#
- 1...Sb7
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sc8
- 2.Rxe4#
- 1...Se8
- 2.Rxe4#
- 1...Kd4!
- 1...Sxh4
- 1.Sa8?
- 1...Kf6
- 2.Qa1#
- 1...Sxh4
- 2.Bg7#
- 1...Sxc4
- 2.Rxf5#
- 1...Sg3
- 2.Bg7#
- 1...Sd4
- 2.Bxd6#
- 2.Bg7#
- 1...Sh6
- 2.Bg7#
- 1...Se7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sb5
- 2.Rxf5#
- 1...Sb7
- 2.Rxf5#
- 1...Sf7
- 2.Rxf5#
- 1...Sc8
- 2.Rxf5#
- 1...Se8
- 2.Rxf5#
- 1...Kd4!
- 1...Kf6
- 1.Sc8?
- 1...Kf6
- 2.Bg7#
- 2.Qa1#
- 1...Sxh4
- 2.Bg7#
- 1...Sxc4
- 2.Rxf5#
- 1...Sxc8
- 2.Rxf5#
- 1...Sg3
- 2.Bg7#
- 1...Sd4
- 2.Bxd6#
- 2.Bg7#
- 1...Sh6
- 2.Bg7#
- 1...Se7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sb5
- 2.Rxf5#
- 1...Sb7
- 2.Rxf5#
- 1...Sf7
- 2.Rxf5#
- 1...Se8
- 2.Rxf5#
- 1...Kd4!
- 1...Kf6
- 1.Bxd6+?
- 1...Kd4
- 2.Qa1#
- 1...Kf6
- 2.Sd5#
- 2.Sbd7#
- 2.Rxf5#
- 2.Rf8#
- 2.Qa1#
- 1...Sxd6!
- 1...Kd4
- 1.Rxe4+?
- 1...Kf6
- 2.Scd7#
- 2.Sd5#
- 2.Sbd7#
- 1...Sxe4!
- 1...Kf6
- 1.Rxf5+?
- 1...Kd4
- 2.Bg7#
- 2.Qa1#
- 1...Sxf5!
- 1...Kd4
- 1.Rxd6?
- threat
- 2.Scd7#
- 2.Sbd7#
- 2.Rxf5#
- 1...Kf6
- 2.Scd7#
- 2.Sbd7#
- 2.Rxf5#
- 2.Qa1#
- 1...Sxh4
- 2.Scd7#
- 2.Sbd7#
- 2.Rxe4#
- 2.Rd5#
- 1...Sxd6
- 2.Bg7#
- 1...Sg3
- 2.Scd7#
- 2.Sbd7#
- 2.Rd5#
- 1...Sd4
- 2.Scd7#
- 2.Sbd7#
- 2.Rxe4#
- 2.Rd5#
- 1...Sh6
- 2.Scd7#
- 2.Sbd7#
- 2.Rxe4#
- 2.Rd5#
- 1...Sg7
- 2.Scd7#
- 2.Sbd7#
- 2.Rxe4#
- 2.Rd5#
- 1...Se7!
- threat
- 1.Rd7?
- 1...Kf6
- 2.Bg7#
- 2.Qa1#
- 1...Sxh4
- 2.Bg7#
- 1...Sxc4
- 2.Rxf5#
- 1...Sg3
- 2.Bg7#
- 1...Sd4
- 2.Bxd6#
- 2.Bg7#
- 1...Sh6
- 2.Bg7#
- 1...Se7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sb5
- 2.Rxf5#
- 1...Sb7
- 2.Rxf5#
- 1...Sf7
- 2.Rxf5#
- 1...Sc8
- 2.Rxf5#
- 1...Se8
- 2.Rxf5#
- 1...Kd4!
- 1...Kf6
- 1.Qa1+?
- 1...Sd4
- 2.Bxd6#
- 1...Kxf4!
- 1...Sd4
- 1.Scd7+?
- Keys
- 1.Sba4!
- 1...Kd4
- 2.Rxe4#
- 1...Kf6
- 2.Qa1#
- 1...Sxh4
- 2.Bg7#
- 1...Sxc4
- 2.Rxf5#
- 1...Sg3
- 2.Bg7#
- 1...Sd4
- 2.Bxd6#
- 2.Bg7#
- 1...Sh6
- 2.Bg7#
- 1...Se7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sb5
- 2.Rxf5#
- 1...Sb7
- 2.Rxf5#
- 1...Sf7
- 2.Rxf5#
- 1...Sc8
- 2.Rxf5#
- 1...Se8
- 2.Rxf5#
- 1...Kd4
- 1.Sba4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::B(K)
- S(d);N_GUARD,XP(E)::B(K)
- S(d);N_GUARD::B(K),XS(d)
- S(e);N_GUARD,XP(C)::R1(D),XS(d)
- S(e);N_GUARD::R1(D),XS(d)
- Tries
- Try
- S(F);CHECK
- Vars
- K(c);P_SPINP(b),S_FLIGHT::QAB(A)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- S(G);
- Vars
- S(e);N_GUARD,XP(C)::R1(D),XP(b)
- S(e);N_GUARD::R1(D),XP(b)
- Refutation
- K(c);P_SPINP(b),S_FLIGHT
- Try
- S(G);
- Vars
- K(c);P_SPINS(d),S_FLIGHT::QAB(A)
- S(d);N_GUARD,XP(E)::B(K)
- S(e);N_GUARD,XP(C)::R1(D),XS(d)
- S(d);N_GUARD::B(K)
- S(d);N_GUARD::B(K),XS(d)
- S(e);N_GUARD::R1(D),XS(d)
- Refutation
- K(c);P_SPINP(b),P_SPINS(e),S_FLIGHT
- Try
- S(G);
- Vars
- S(d);N_GUARD,XP(E)::B(K)
- S(e);N_GUARD,XP(C)::R1(D),XS(d)
- S(e);N_GUARD,XS(G)::R1(D),XS(d)
- S(d);N_GUARD::B(K)
- S(d);N_GUARD::B(K),XS(d)
- S(e);N_GUARD::R1(D),XS(d)
- Refutation
- K(c);P_SPINP(b),P_SPINS(e),S_FLIGHT
- Try
- B(K);CHECK,XS(e)
- Vars
- K(c);P_SPINP(b),S_FLIGHT::QAB(A)
- Refutation
- S(d);XB(K)
- Try
- R(D);CHECK,XP(b)
- Refutation
- S(e);XR(D)
- Try
- R(D);CHECK,XS(d)
- Refutation
- S(e);XR(D)
- Try
- R(J);XS(e)
- Threat
- DUALS(3)
- Vars
- S(d);N_GUARD,SBLOCK,XR(J)::B(K)
- Refutation
- S(d);
- Try
- R(J);
- Vars
- S(d);N_GUARD,XP(E)::B(K)
- S(e);N_GUARD,XP(C)::R1(D),XS(d)
- S(d);N_GUARD::B(K)
- S(d);N_GUARD::B(K),XS(d)
- S(e);N_GUARD::R1(D),XS(d)
- Refutation
- K(c);P_SPINP(b),P_SPINS(e),S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- S(d);P_SPINS(d)::B(K),XS(e)
- Refutation
- K(c);S_FLIGHT,XR(D)
- Try
- Actual
- S(G);
- Vars
- K(c);P_SPINP(b),P_SPINS(e),S_FLIGHT::R1(D),XP(b)
- K(c);P_SPINS(d),S_FLIGHT::QAB(A)
- S(d);N_GUARD,XP(E)::B(K)
- S(e);N_GUARD,XP(C)::R1(D),XS(d)
- S(d);N_GUARD::B(K)
- S(d);N_GUARD::B(K),XS(d)
- S(e);N_GUARD::R1(D),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).