MESON Chess Problem Database
Problem Display
PID: 17051 (8/8/3p4/3Bb3/8/3p1K2/7p/1R4qk w - - 0 1)
Heathcote, Godfrey
To Alain White, 1945
#2
3 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Kf2#
- 1...Qc1
- 2.Kf2#
- 2.Rxc1#
- 1...Qd1+
- 2.Kf2#
- 2.Rxd1#
- 1...Qe1
- 2.Rxe1#
- 1...Qf1+
- 2.Rxf1#
- 1...Ba1
- 2.Kf4#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...Qxb1
- Tries
- 1.Be4?
- 1...Qd1+
- 2.Kf2#
- 2.Rxd1#
- 1...Qf1+
- 2.Rxf1#
- 1...Qxb1
- 2.Kf2#
- 1...Qc1
- 2.Kf2#
- 2.Rxc1#
- 1...Qe1
- 2.Rxe1#
- 1...Ba1
- 2.Kf4#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...d5!
- 1...Qd1+
- 1.Ra1?
- 1...Qd1+
- 2.Kf2#
- 2.Rxd1#
- 1...Qf1+
- 2.Rxf1#
- 1...Qxa1
- 2.Kf2#
- 1...Qb1
- 2.Kf2#
- 2.Rxb1#
- 1...Qc1
- 2.Kf2#
- 2.Rxc1#
- 1...Qe1
- 2.Rxe1#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...Bxa1!
- 1...Qd1+
- 1.Rd1?
- 1...Qf1+
- 2.Rxf1#
- 1...Qe1
- 2.Rxe1#
- 1...Ba1
- 2.Kf4#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...Qxd1+!
- 1...Qf1+
- 1.Re1?
- 1...Qf1+
- 2.Rxf1#
- 1...Ba1
- 2.Kf4#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...Qxe1!
- 1...Qf1+
- 1.Rf1?
- 1...Ba1
- 2.Kf4#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...Qxf1+!
- 1...Ba1
- 1.Be4?
- Keys
- 1.Rc1!
- 1...Qd1+
- 2.Kf2#
- 2.Rxd1#
- 1...Qf1+
- 2.Rxf1#
- 1...Qxc1
- 2.Kf2#
- 1...Qe1
- 2.Rxe1#
- 1...Ba1
- 2.Kf4#
- 1...Bb2
- 2.Kf4#
- 1...Bc3
- 2.Kf4#
- 1...Bg3
- 2.Kg4#
- 1...Bd4
- 2.Kf4#
- 1...Bf4
- 2.Kxf4#
- 1...Bf6
- 2.Kf4#
- 1...Bg7
- 2.Kf4#
- 1...Bh8
- 2.Kf4#
- 1...d2
- 2.Ke2#
- 1...Qd1+
- 1.Rc1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(a);N_SPINQ(a),XR(A)::B(C)+K(B)
- Q(a);OGATEB::R(A),XQ(a)
- Q(a);CHECK,OGATEB::R(A),XQ(a)
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
- Tries
- Try
- B(C);
- Vars
- Q(a);CHECK,OGATEB::R(A),XQ(a)
- Q(a);N_SPINQ(a),XR(A)::B(C)+K(B)
- Q(a);OGATEB::R(A),XQ(a)
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
- Refutation
- P(f);
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATEB::R(A),XQ(a)
- Q(a);N_SPINQ(a),SBLOCK,XR(A)::B(C)+K(B)
- Q(a);OGATEB::R(A),XQ(a)
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
- Refutation
- B(e);N_SPINQ(a),XR(A)
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATEB::R(A),XQ(a)
- Q(a);OGATEB::R(A),XQ(a)
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
- Refutation
- Q(a);CHECK,N_SPINQ(a),XR(A)
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATEB::R(A),XQ(a)
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
- Refutation
- Q(a);N_SPINQ(a),XR(A)
- Try
- R(A);
- Vars
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
- Refutation
- Q(a);CHECK,N_SPINQ(a),XR(A)
- Try
- Actual
- R(A);
- Vars
- Q(a);CHECK,OGATEB::R(A),XQ(a)
- Q(a);N_SPINQ(a),XR(A)::B(C)+K(B)
- Q(a);OGATEB::R(A),XQ(a)
- B(e);::B(C)+K(B)
- B(e);::B(C)+K(B),XB(e)
- P(d);::B(C)+K(B)
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).