MESON Chess Problem Database
Problem Display
PID: 199592 (3B3b/1PQ4B/2K5/2RP4/p1b1P3/P1kp4/1n1R4/2N2N2 w - - 0 1)
Karwatkar, Abdul Jabbar
The Problemist, 1982
#2
12 + 6
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Kd4
- Tries
- 1.Kb6?
- 1...Kd4
- 2.Se2#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1
- 2.Rxc4#
- 1...Bd4!
- 1...Kd4
- 1.Kd6?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1
- 2.Rxc4#
- 1...Be5+!
- 1...Kd4
- 1.Kd7?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Sd1
- 2.Rxc4#
- 1...Bg7!
- 1...Kd4
- 1.Bf5?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.Bg6?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.Bh4?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.Bg5?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.Qh2?
- 1...Kd4
- 2.Se2#
- 1...Sd1
- 2.Rxd3#
- 1...Bd4
- 2.Ba5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7!
- 1...Kd4
- 1.Qb6?
- threat
- 2.Qxb2#
- 1...Kd4
- 2.Qxb2#
- 1...Sd1!
- threat
- 1.Qe7?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Ba5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.b8Q?
- threat
- 2.Qxb2#
- 1...Kd4
- 2.Se2#
- 2.Qxb2#
- 1...Sd1!
- threat
- 1.b8S?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.b8B?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.b8R?
- 1...Kd4
- 2.Se2#
- 1...Bd4
- 2.Sa2#
- 2.Qa5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1!
- 1...Kd4
- 1.Kb6?
- Keys
- 1.Qg3!
- 1...Kd4
- 2.Se2#
- 1...Sd1
- 2.Qxd3#
- 1...Bd4
- 2.Ba5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Bxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Kd4
- 1.Qg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- S(a);N_GUARD::R1(F),XB(e)
- Refutation
- B(f);P_PINR(F)
- Try
- K(H);P-FLIGHT
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::B(L),XB(f)
- B(f);N_GUARD::QAB(J),XB(f)
- S(a);N_GUARD::R1(F),XB(e)
- Refutation
- B(f);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- S(a);N_GUARD::R1(F),XB(e)
- Refutation
- B(f);
- Try
- B(K);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- B(K);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- B(L);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- B(L);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- Q(J);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- S(a);N_GUARD::R1(C),XP(c)
- B(f);SBLOCK::B(L)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- B(f);
- Try
- Q(J);
- Threat
- QAB1(J),XS(a)
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::QAB(J),XS(a)
- Refutation
- S(a);
- Try
- Q(J);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::B(L)
- B(f);N_GUARD::QAB(J),XB(f)
- Refutation
- S(a);
- Try
- P(I);
- Threat
- QAB1(I),XS(a)
- Refutation
- S(a);
- Try
- P(I);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- P(I);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);SBLOCK::QAB(J)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- P(I);
- Vars
- K(b);N_SPINB(e),P_SPINP(c),S_FLIGHT::S(A)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
- Refutation
- S(a);
- Try
- Actual
- Q(J);P_PINP(c)
- Vars
- K(b);N_SPINB(e),S_FLIGHT::S(A)
- S(a);N_GUARD::QAR1(J),XP(c)
- B(f);SBLOCK::B(L)
- B(f);N_GUARD::QAB(J),XB(f)
- B(f);N_GUARD::B(L),XB(f)
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).