MESON Chess Problem Database
Problem Display
PID: 62901 (6K1/1Q6/2nNN3/2Pk2p1/6P1/4n3/2P5/4R1B1 w - - 0 1)
Webster, LJ
Chess, 1944
#2
9 + 4
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sf1
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sxc2
- 2.Sc7#
- 2.Qb3#
- 1...Sg2
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sc4
- 2.Sc7#
- 1...Sxg4
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sf5
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sd1
- Tries
- 1.Kf7?
- 1...Sxc2
- 2.Sc7#
- 2.Qb3#
- 1...Sxg4
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sd1
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sf1
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sg2
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Sc4
- 2.Sc7#
- 1...Sf5
- 2.Sc7#
- 2.Qb3#
- 2.c4#
- 1...Ke5!
- 1...Sxc2
- 1.Sf7?
- 1...Kc4
- 2.Qb3#
- 1...Ke4
- 2.Qxc6#
- 1...Sxc2
- 2.Qb3#
- 1...Sxg4
- 2.Qb3#
- 1...Sd1
- 2.Qb3#
- 1...Sf1
- 2.Qb3#
- 1...Sg2
- 2.Qb3#
- 1...Sc4
- 2.Sc7#
- 1...Sf5
- 2.Qb3#
- 1...Kxe6!
- 1...Kc4
- 1.Bh2?
- 1...Kxe6
- 2.Qf7#
- 1...Sxc2
- 2.Re5#
- 2.Qb3#
- 1...Sxg4
- 2.Qb3#
- 2.c4#
- 1...Sd1
- 2.Re5#
- 2.Qb3#
- 2.c4#
- 1...Sf1
- 2.Re5#
- 2.Qb3#
- 2.c4#
- 1...Sg2
- 2.Re5#
- 2.Qb3#
- 2.c4#
- 1...Sf5
- 2.Re5#
- 2.Qb3#
- 2.c4#
- 1...Sc4!
- 1...Kxe6
- 1.Qb3+?
- 1...Sc4
- 2.Sc7#
- 2.Qxc4#
- 2.Qf3#
- 1...Ke5!
- 1...Sc4
- 1.Kf7?
- Keys
- 1.Sc4!
- 1...Kxc4
- 2.Qb3#
- 1...Ke4
- 2.Qxc6#
- 1...Kxe6
- 2.Qf7#
- 1...Sxc2
- 2.Sb6#
- 1...Sxc4
- 2.Sc7#
- 1...Sxg4
- 2.Sb6#
- 1...Sd1
- 2.Sb6#
- 1...Sf1
- 2.Sb6#
- 1...Sg2
- 2.Sb6#
- 1...Sf5
- 2.Sb6#
- 1...Kxc4
- 1.Sc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- S(a);::S(G)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- S(a);::S(G)
- Refutation
- K(b);N_SPINS(d),P-FLIGHT,P_SPINS(a)
- Try
- S(F);
- Vars
- K(b);N_SPINS(d),S_FLIGHT::QAB1(H)
- K(b);N_SPINS(d),P_SPINS(a),S_FLIGHT::QAB(H),XS(d)
- S(a);N_GUARD,XP(C)::QAB(H)
- S(a);N_GUARD,XP(D)::QAB(H)
- S(a);N_GUARD::QAB(H)
- S(a);SBLOCK::S(G)
- Refutation
- K(b);N_SPINS(d),P_SPINS(a),S_FLIGHT,XS(G)
- Try
- B(B);
- Vars
- K(b);N_SPINS(d),OGATEB,P_SPINS(a),S_FLIGHT,XS(G)::QAB1(H)
- Refutation
- S(a);
- Try
- Q(H);CHECK,N_PINS(d)
- Refutation
- K(b);P-FLIGHT,P_SPINS(a)
- Try
- Actual
- S(F);
- Vars
- K(b);N_SPINS(d),OGATEB,S_FLIGHT,XS(F)::QAB1(H)
- K(b);N_SPINS(d),P_SPINS(a),S_FLIGHT::QAB(H),XS(d)
- K(b);N_SPINS(d),OGATEB,P_SPINS(a),S_FLIGHT,XS(G)::QAB1(H)
- S(a);XP(C)::S(F)
- S(a);SBLOCK,XS(F)::S(G)
- S(a);XP(D)::S(F)
- S(a);::S(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).