MESON Chess Problem Database
Problem Display
PID: 206424 (8/8/1n6/1B1b1RK1/2rk4/1QN5/2R5/B4N2 w - - 0 1)
Bihar, Aladar
Sp. HM., Grantham Journal, 1925
#2
8 + 4
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kd3
- 2.Rd2#
- 1...Kc5
- 2.Se4#
- 1...Rc5
- 2.Rd2#
- 1...Bh1
- 2.Rd2#
- 1...Bg2
- 2.Rd2#
- 1...Bf3
- 2.Rd2#
- 1...Be4
- 2.Se2#
- 1...Bc6
- 2.Rd2#
- 1...Be6
- 2.Rd2#
- 1...Bb7
- 2.Rd2#
- 1...Bf7
- 2.Rd2#
- 1...Ba8
- 2.Rd2#
- 1...Bg8
- 2.Rd2#
- 1...Sa4
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sa8
- 2.Rxd5#
- 1...Sc8
- 2.Rxd5#
- 1...Kd3
- Tries
- 1.Sa2+?
- 1...Ke4
- 2.Sd2#
- 2.Sg3#
- 2.Re2#
- 2.Rf4#
- 2.Re5#
- 2.Qe3#
- 2.Qf3#
- 1...Kc5
- 2.Qb4#
- 1...Rc3!
- 1...Ke4
- 1.Se2+?
- 1...Ke4
- 2.Sd2#
- 2.Sfg3#
- 2.Seg3#
- 2.Rf4#
- 2.Re5#
- 2.Qe3#
- 2.Qf3#
- 1...Kc5!
- 1...Ke4
- 1.Sa4+?
- 1...Ke4
- 2.Sd2#
- 2.Sg3#
- 2.Re2#
- 2.Rf4#
- 2.Re5#
- 2.Qe3#
- 2.Qf3#
- 1...Rc3!
- 1...Ke4
- 1.Se4+?
- 1...Kxe4
- 2.Sd2#
- 2.Sg3#
- 2.Re2#
- 2.Rf4#
- 2.Re5#
- 2.Qe3#
- 2.Qf3#
- 1...Rc3!
- 1...Kxe4
- 1.Sxd5+?
- 1...Ke4
- 2.Sd2#
- 2.Sg3#
- 2.Sf6#
- 2.Re2#
- 2.Re5#
- 2.Qe3#
- 2.Qf3#
- 1...Kc5
- 2.Qb4#
- 1...Rc3!
- 1...Ke4
- 1.Re5?
- 1...Kd3
- 2.Sb1#
- 2.Sd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sxd5#
- 2.Rd2#
- 1...Kc5
- 2.Se4#
- 1...Rxc3
- 2.Qxc3#
- 1...Ra4
- 2.Sa2#
- 2.Se2#
- 2.Sxa4#
- 1...Rb4
- 2.Sb1#
- 2.Sd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sxd5#
- 1...Rc5
- 2.Se2#
- 1...Rc6
- 2.Se2#
- 1...Rc7
- 2.Se2#
- 1...Rc8
- 2.Se2#
- 1...Bh1
- 2.Se2#
- 1...Bg2
- 2.Se2#
- 1...Bf3
- 2.Se2#
- 1...Be4
- 2.Se2#
- 1...Bc6
- 2.Se2#
- 1...Be6
- 2.Se2#
- 1...Bb7
- 2.Se2#
- 1...Bf7
- 2.Se2#
- 1...Ba8
- 2.Se2#
- 1...Bg8
- 2.Se2#
- 1...Sa4
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sa8
- 2.Rxd5#
- 1...Sc8
- 2.Rxd5#
- 1...Kxe5!
- 1...Kd3
- 1.Qxc4+?
- 1...Sxc4
- 2.Rxd5#
- 1...Bxc4!
- 1...Sxc4
- 1.Sa2+?
- Keys
- 1.Kf4!
- 1...Kd3+
- 2.Se4#
- 1...Kc5+
- 2.Se4#
- 1...Rxc3
- 2.Qxc3#
- 1...Ra4
- 2.Sa2#
- 2.Se2#
- 2.Sxa4#
- 1...Rb4
- 2.Sb1#
- 2.Sd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sxd5#
- 1...Rc5
- 2.Se2#
- 2.Rd2#
- 1...Rc6
- 2.Se2#
- 1...Rc7
- 2.Se2#
- 1...Rc8
- 2.Se2#
- 1...Bh1
- 2.Se2#
- 2.Rd2#
- 1...Bg2
- 2.Se2#
- 2.Rd2#
- 1...Bf3
- 2.Se2#
- 2.Rd2#
- 1...Be4
- 2.Se2#
- 1...Bc6
- 2.Se2#
- 2.Rd2#
- 1...Be6
- 2.Se2#
- 2.Rd2#
- 1...Bb7
- 2.Se2#
- 2.Rd2#
- 1...Bf7
- 2.Se2#
- 2.Rd2#
- 1...Ba8
- 2.Se2#
- 2.Rd2#
- 1...Bg8
- 2.Se2#
- 2.Rd2#
- 1...Sa4
- 2.Rxd5#
- 1...Sd7
- 2.Rxd5#
- 1...Sa8
- 2.Rxd5#
- 1...Sc8
- 2.Rxd5#
- 1...Kd3+
- 1.Kf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- K(b);P-FLIGHT,P_SPINR(a)::R1(C)
- K(b);P_SPINB(c),S_FLIGHT::S(E)
- R(a);SBLOCK::R(C)
- B(c);::R(C)
- B(c);SBLOCK::B(A)+S(E),DCHECK
- S(d);N_GUARD::R1(G),XB(c)
- Tries
- Try
- S(E);CHECK
- Vars
- K(b);P_SPINB(c),P_SPINR(a),S_FLIGHT::QAB1(D)
- Refutation
- R(a);P_SPINR(a)
- Try
- S(E);CHECK
- Refutation
- K(b);P_SPINB(c),P_SPINR(a),S_FLIGHT
- Try
- S(E);CHECK
- Refutation
- R(a);P_SPINR(a)
- Try
- S(E);CHECK
- Refutation
- R(a);P_SPINR(a)
- Try
- S(E);CHECK,XB(c)
- Vars
- K(b);P_SPINR(a),S_FLIGHT::QAB1(D)
- Refutation
- R(a);P_SPINR(a)
- Try
- R(G);
- Vars
- K(b);P_SPINB(c),S_FLIGHT::S(E)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB1(D),XR(a)
- R(a);::B(A)+S(E),DCHECK
- B(c);::B(A)+S(E),DCHECK
- S(d);N_GUARD::R1(G),XB(c)
- Refutation
- K(b);S_FLIGHT,XR(G)
- Try
- Q(D);CHECK,XR(a)
- Vars
- S(d);XQ(D)::R1(G),XB(c)
- Refutation
- B(c);XQ(D)
- Try
- Actual
- K(H);S_FLIGHT
- Vars
- K(b);CHECK,P-FLIGHT,P_SPINR(a)::QAR(D)+S(E)
- K(b);CHECK,P_SPINB(c),S_FLIGHT::S(E)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB1(D),XR(a)
- R(a);::B(A)+S(E),DCHECK
- B(c);::B(A)+S(E),DCHECK
- S(d);N_GUARD::R1(G),XB(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).