MESON Chess Problem Database
Problem Display
PID: 64174 (4B2n/6p1/3Bkp2/1Q2P3/6q1/pP2R1N1/K2b4/3R4 w - - 0 1)
Laws, Benjamin Glover
Illustrated London News, 1882
#2
9 + 7
| 4760 | 200 Classic Chess Puzzles | 1993 |
SOLUTION
- SOUND
- Sets
- 1...Qxd1
- 2.Qc4#
- 1...Qh3
- 2.Qc4#
- 1...Qf5
- 2.Qc4#
- 1...Qh5
- 2.Qc4#
- 1...Qc4
- 2.Qxc4#
- 1...Qg5
- 2.Qc4#
- 1...Qg6
- 2.Qc4#
- 1...Bc1
- 2.Qd7#
- 2.Qd5#
- 1...Be1
- 2.Qd7#
- 2.Qd5#
- 1...Bc3
- 2.Qd7#
- 2.Qd5#
- 1...Bxe3
- 2.Qd7#
- 2.Qd5#
- 1...Bb4
- 2.Qd7#
- 2.Qd5#
- 1...Ba5
- 2.Qd7#
- 2.Qd5#
- 1...Sf7
- 2.Bd7#
- 1...fxe5
- 2.Qxe5#
- 1...Qxd1
- Tries
- 1.Rxd2?
- threat
- 2.Qd7#
- 2.Qd5#
- 1...Qxg3
- 2.Qd7#
- 1...fxe5
- 2.Qxe5#
- 1...Qa4
- 2.Qd5#
- 1...Qf3
- 2.Qd7#
- 1...Qc4
- 2.Qxc4#
- 2.Qd7#
- 1...Qe4
- 2.Qd7#
- 1...Qd4!
- threat
- 1.Rd3?
- threat
- 2.Qd7#
- 2.Qd5#
- 1...Qxg3
- 2.Qd7#
- 1...fxe5
- 2.Qxe5#
- 1...Qa4
- 2.Qd5#
- 1...Qf3
- 2.Qd7#
- 1...Qc4
- 2.Qxc4#
- 2.Qd7#
- 1...Qe4
- 2.Qd7#
- 1...Qd4!
- threat
- 1.exf6+?
- 1...Kxd6
- 2.Qc6#
- 2.Qe5#
- 1...Kxf6
- 2.Be7#
- 2.Qe5#
- 1...Bxe3
- 2.Qe5#
- 1...Qe4!
- 1...Kxd6
- 1.Rxd2?
- Keys
- 1.Sf5!
- 1...Kxf5
- 2.e6#
- 1...Qxd1
- 2.Sd4#
- 2.Sxg7#
- 1...Qxf5
- 2.Qc4#
- 1...Bxe3
- 2.Qd7#
- 1...fxe5
- 2.Qxe5#
- 1...Qe2
- 2.Sd4#
- 2.Sxg7#
- 1...Qf3
- 2.Sd4#
- 2.Sxg7#
- 1...Qh3
- 2.Sd4#
- 2.Sxg7#
- 1...Qh5
- 2.Sd4#
- 2.Sxg7#
- 1...Qg1
- 2.Sd4#
- 1...Qg2
- 2.Sd4#
- 1...Qg3
- 2.Sd4#
- 1...Qa4
- 2.Sxg7#
- 1...Qb4
- 2.Sxg7#
- 1...Qc4
- 2.Sxg7#
- 1...Qd4
- 2.Sxd4#
- 2.Sxg7#
- 1...Qe4
- 2.Sxg7#
- 1...Qf4
- 2.Sxg7#
- 1...Qh4
- 2.Sxg7#
- 1...Qg5
- 2.Sd4#
- 1...Qg6
- 2.Sd4#
- 1...Bc1
- 2.Qd7#
- 1...Be1
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bb4
- 2.Qd7#
- 1...Ba5
- 2.Qd7#
- 1...Sg6
- 2.Sxg7#
- 1...Sf7
- 2.Bd7#
- 1...g5
- 2.Sg7#
- 1...g6
- 2.Sg7#
- 1...Kxf5
- 1.Sf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 18
- REMOVED MATES = 3
- Sets
- Q(c);N_GUARD,XR(A)::QAB(F)
- Q(c);N_GUARD::QAB(F)
- Q(c);N_GUARD,P_PINP(C)::QAB(F),XQ(c)
- S(g);SBLOCK::B(I)
- P(e);OGATE,P_SPINP(e),XP(G)::QAR1(F),XP(e)
- Tries
- Try
- R(A);XB(a)
- Threat
- DUALS(2)
- Vars
- Q(c);XS(E)::QAB1(F)
- P(e);OGATE,P_SPINP(e),XP(G)::QAR1(F),XP(e)
- Q(c);::QAB1(F)
- Refutation
- Q(c);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(c);XS(E)::QAB1(F)
- P(e);OGATE,XP(G)::QAR1(F),XP(e)
- Q(c);::QAB1(F)
- Refutation
- Q(c);
- Try
- P(G);CHECK,XP(e)
- Vars
- B(a);XR(D)::QAR1(F)
- Refutation
- Q(c);P_SPINQ(c)
- Try
- Actual
- S(E);
- Vars
- K(d);OGATE,S_FLIGHT,XS(E)::QAR(F)+P(G)
- Q(c);N_GUARD,SBLOCK,XS(E)::QAB(F)
- B(a);XR(D)::QAB1(F)
- P(e);OGATE,P_SPINP(e),XP(G)::QAR1(F),XP(e)
- Q(c);N_GUARD::S(E)
- Q(c);N_GUARD::S(E),XP(f)
- Q(c);N_GUARD,P_PINP(C)::S(E),XP(f)
- B(a);::QAB1(F)
- S(g);S_CUTQ(c)::S(E),XP(f)
- S(g);SBLOCK::B(I)
- P(f);S_CUTQ(c)::S(E)
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).