MESON Chess Problem Database
Problem Display
PID: 96805 (6bK/6B1/r3R2p/2Pk1NqR/1Pp3p1/2pB4/r3N3/1Q6 w - - 0 1)
Webster, LJ
The Chess Problem, 1944
#2
10 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Sxf4#
- 1...Qh4
- 2.Sf4#
- 1...Qf6
- 2.Sf4#
- 1...Qe7
- 2.Sf4#
- 1...Qd8
- 2.Sf4#
- 1...Qxf5
- 2.Sf4#
- 1...Qxh5
- 2.Sf4#
- 1...Qg6
- 2.Sf4#
- 1...Qxg7+
- 2.Sxg7#
- 1...Ra3
- 2.Rd6#
- 1...Ra4
- 2.Rd6#
- 1...Ra5
- 2.Rd6#
- 1...Rc6
- 2.Re5#
- 1...Rd6
- 2.Rxd6#
- 1...Ra7
- 2.Rd6#
- 1...Ra8
- 2.Rd6#
- 1...Bxe6
- 2.Se7#
- 2.Be4#
- 2.Qh1#
- 1...cxd3
- 2.Qb3#
- 1...Qf4
- Tries
- 1.Sfd4?
- threat
- 2.Sxc3#
- 2.Sf4#
- 2.Be4#
- 2.Qh1#
- 1...Qxh5
- 2.Sxc3#
- 2.Sf4#
- 2.Be4#
- 1...Rxe6
- 2.Sxc3#
- 2.Sf4#
- 1...cxd3
- 2.Qb3#
- 1...Qe5
- 2.Be4#
- 2.Rhxe5#
- 2.Rexe5#
- 2.Qh1#
- 1...Ra1
- 2.Sxc3#
- 2.Sf4#
- 2.Be4#
- 1...Rc2
- 2.Sf4#
- 2.Be4#
- 2.Qh1#
- 1...R2a3
- 2.Sf4#
- 2.Be4#
- 2.Qh1#
- 1...R6a3
- 2.Sf4#
- 2.Be4#
- 2.Rd6#
- 2.Qh1#
- 1...Bh7
- 2.Sxc3#
- 2.Sf4#
- 1...c2
- 2.Sc3#
- 2.Sf4#
- 2.Be4#
- 2.Qh1#
- 1...g3
- 2.Sxc3#
- 2.Sf4#
- 2.Be4#
- 1...Rxe2!
- threat
- 1.Rxa6?
- threat
- 2.Sxc3#
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 2.Qh1#
- 1...Qxg7+
- 2.Sxg7#
- 1...Qxf5
- 2.Sxc3#
- 2.Sf4#
- 2.Be4#
- 2.Rxf5#
- 2.Rd6#
- 2.Qh1#
- 1...Qxh5
- 2.Sxc3#
- 2.Sf4#
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 1...Rxe2
- 2.Rd6#
- 1...cxd3
- 2.Qxd3#
- 1...Qf6
- 2.Se3#
- 2.Se7#
- 1...Qc1
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 1...Qd2
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 2.Qh1#
- 1...Qe3
- 2.Sxc3#
- 2.Sxe3#
- 2.Se7#
- 2.Rd6#
- 1...Qf4
- 2.Sxc3#
- 2.Sxf4#
- 2.Se3#
- 2.Se7#
- 1...Qh4
- 2.Sxc3#
- 2.Sf4#
- 2.Se3#
- 2.Sxh4#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 1...Qe7
- 2.Sxc3#
- 2.Sf4#
- 2.Se3#
- 2.Sxe7#
- 1...Qd8
- 2.Sxc3#
- 2.Sf4#
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Qh1#
- 1...Qg6
- 2.Sxc3#
- 2.Sf4#
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Qh1#
- 1...Ra1
- 2.Sxc3#
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 1...Rc2
- 2.Se3#
- 2.Se7#
- 2.Rd6#
- 2.Qh1#
- 1...Ra3
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 2.Qh1#
- 1...c2
- 2.Sc3#
- 2.Se3#
- 2.Se7#
- 2.Rd6#
- 2.Qh1#
- 1...g3
- 2.Sxc3#
- 2.Se3#
- 2.Se7#
- 2.Be4#
- 2.Rd6#
- 1...Rxa6!
- threat
- 1.Sfd4?
- Keys
- 1.c6!
- threat
- 2.Rd6#
- 1...Qxg7+
- 2.Sxg7#
- 1...Kxe6
- 2.Bxc4#
- 1...Qxf5
- 2.Sf4#
- 1...Rxc6
- 2.Re5#
- 1...Bxe6
- 2.Be4#
- 2.Qh1#
- 1...cxd3
- 2.Qb3#
- 1...Qf4
- 2.Sxf4#
- 1...Qf6
- 2.Sf4#
- 1...Qe7
- 2.Sf4#
- 1...Qd8
- 2.Sf4#
- 1...Qg6
- 2.Sf4#
- threat
- 1.c6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(f);N_GUARD::S(B),XQ(f)
- Q(f);N_GUARD::S(B)
- Q(f);N_GUARD,P_PINB(I)::S(B)
- Q(f);N_GUARD,P_SPINQ(f),XS(F)::S(B)
- Q(f);N_GUARD,XR(G)::S(B)
- Q(f);CHECK,XB(I)::R(G)+S(F),XQ(f)
- R(g);N_GUARD::R1(H)
- R(g);SBLOCK::R1(H)
- R(g);N_GUARD::R1(H),XR(g)
- P(c);OGATEB,XB(C)::QAB(A)
- Tries
- Try
- S(F);P_PINQ(f)
- Threat
- DUALS(4)
- Vars
- P(c);OGATEB,XB(C)::QAB(A)
- Refutation
- R(a);XS(B)
- Try
- R(H);XR(g)
- Threat
- DUALS(6)
- Vars
- Q(f);CHECK,XB(I)::R(G)+S(F),XQ(f)
- R(a);XS(B)::R1(H)
- P(c);OGATE,XB(C)::QAR2(A),XP(c)
- Refutation
- R(a);XR(H)
- Try
- Actual
- P(E);
- Threat
- R1(H)
- Vars
- Q(f);CHECK,XB(I)::R(G)+S(F),XQ(f)
- K(e);S_FLIGHT,XR(H)::B(C),XP(c)
- Q(f);N_GUARD,P_SPINQ(f),XS(F)::S(B)
- R(g);SBLOCK,XP(E)::R1(H)
- P(c);OGATEB,XB(C)::QAB(A)
- Q(f);N_GUARD::S(B),XQ(f)
- Q(f);N_GUARD,P_PINB(I)::S(B)
- Q(f);N_GUARD::S(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).