MESON Chess Problem Database
Problem Display
PID: 140117 (4n3/1K2Q1p1/1B6/2PkN3/4q1p1/1P6/B1N1R3/n7 w - - 0 1)
Wolfs, WJ
Il Due Mosse, 1954
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Qf7#
- 1...Qg2
- 2.Qf7#
- 1...Qd3
- 2.Qf7#
- 1...Qh7
- 2.Qf7#
- 1...Qa4
- 2.Qf7#
- 1...Qb4
- 2.Qf7#
- 1...Qc4
- 2.Qf7#
- 2.bxc4#
- 1...Qd4
- 2.Qf7#
- 1...Qxe5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sd6+
- 2.Qxd6#
- 1...Sf6
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Qh1
- Tries
- 1.Sd3?
- threat
- 2.Qxe4#
- 1...Sd6+
- 2.Qxd6#
- 1...Qxd3
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qxe2
- 2.Sdb4#
- 2.Sf4#
- 1...Qh1
- 2.Sdb4#
- 2.Sf4#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qg2
- 2.Sdb4#
- 2.Sf4#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qf3
- 2.Sdb4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 1...Qf5
- 2.Sdb4#
- 1...Qg6
- 2.Sdb4#
- 2.Sf4#
- 2.Re5#
- 2.Qe5#
- 1...Qh7
- 2.Sdb4#
- 2.Sf4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qe3
- 2.Sdb4#
- 1...Qa4
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qb4
- 2.Sdxb4#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qc4
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 2.bxc4#
- 1...Qd4
- 2.Qe6#
- 2.Qf7#
- 1...Qf4
- 2.Sxf4#
- 2.Qe6#
- 1...Qe5
- 2.Sdb4#
- 2.Rxe5#
- 2.Qxe5#
- 1...Qe6
- 2.Sdb4#
- 2.Sf4#
- 2.Qxe6#
- 1...Sf6
- 2.Qd6#
- 1...Qxe7+!
- threat
- 1.Sf3?
- threat
- 2.Qxe4#
- 1...Sd6+
- 2.Qxd6#
- 1...Qxc2
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qxf3
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 1...Qxe2
- 2.Sb4#
- 1...Qd3
- 2.Sb4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qf5
- 2.Se3#
- 2.Sb4#
- 1...Qg6
- 2.Se3#
- 2.Sb4#
- 2.Re5#
- 2.Qe5#
- 1...Qh7
- 2.Se3#
- 2.Sb4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qe3
- 2.Sxe3#
- 2.Sb4#
- 1...Qa4
- 2.Se3#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qb4
- 2.Se3#
- 2.Sxb4#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qc4
- 2.Se3#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 2.bxc4#
- 1...Qd4
- 2.Qe6#
- 2.Qf7#
- 1...Qf4
- 2.Qe6#
- 1...Qe5
- 2.Sb4#
- 2.Rxe5#
- 2.Qxe5#
- 1...Qe6
- 2.Sb4#
- 2.Qxe6#
- 1...Sf6
- 2.Qd6#
- 1...Qxe7+!
- threat
- 1.Rd2+?
- 1...Qd4
- 2.Rxd4#
- 1...Qd3!
- 1...Qd4
- 1.Qd7+?
- 1...Sd6+
- 2.Qxd6#
- 1...Kxe5+!
- 1...Sd6+
- 1.b4+?
- 1...Qc4
- 2.Bxc4#
- 2.Qf7#
- 1...Sb3!
- 1...Qc4
- 1.Sd3?
- Keys
- 1.Sc6!
- threat
- 2.Qxe4#
- 1...Qxe7+
- 2.Sxe7#
- 1...Sd6+
- 2.Qxd6#
- 1...Qxc2
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qxe2
- 2.S2b4#
- 2.S6b4#
- 1...Qh1
- 2.Se3#
- 2.S2b4#
- 2.S6b4#
- 2.Rd2#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qg2
- 2.Se3#
- 2.S2b4#
- 2.S6b4#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qd3
- 2.S2b4#
- 2.S6b4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qf3
- 2.S2b4#
- 2.S6b4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 1...Qf5
- 2.Se3#
- 2.S2b4#
- 2.S6b4#
- 1...Qg6
- 2.Se3#
- 2.S2b4#
- 2.S6b4#
- 2.Re5#
- 2.Qe5#
- 1...Qh7
- 2.Se3#
- 2.S2b4#
- 2.S6b4#
- 2.Re5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qe3
- 2.Sxe3#
- 2.S2b4#
- 2.S6b4#
- 1...Qa4
- 2.Se3#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qb4
- 2.Se3#
- 2.S2xb4#
- 2.S6xb4#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 1...Qc4
- 2.Se3#
- 2.Re5#
- 2.Qg5#
- 2.Qe5#
- 2.Qe6#
- 2.Qf7#
- 2.bxc4#
- 1...Qd4
- 2.Qe6#
- 2.Qf7#
- 1...Qf4
- 2.Qe6#
- 1...Qe5
- 2.S2b4#
- 2.S6b4#
- 2.Rxe5#
- 2.Qxe5#
- 1...Qe6
- 2.S2b4#
- 2.S6b4#
- 2.Qxe6#
- 1...Sf6
- 2.Qd6#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(b);::QAB(I)
- Q(b);P_PINB(G)::QAB(I)
- S(f);CHECK,N_GUARD::QAR1(I),XS(f)
- S(f);N_GUARD::QAR1(I)
- Tries
- Try
- S(F);
- Threat
- QAB1(I),XQ(b)
- Vars
- S(f);CHECK,N_GUARD::QAR1(I),XS(f)
- Q(b);N_GUARD::S(F)
- S(f);N_GUARD::QAR1(I)
- Refutation
- Q(b);CHECK,XQ(I)
- Try
- S(F);
- Threat
- QAB1(I),XQ(b)
- Vars
- S(f);CHECK,N_GUARD::QAR1(I),XS(f)
- Q(b);N_GUARD,XR(C)::S(B)
- Q(b);N_GUARD::QAB1(I)
- S(f);N_GUARD::QAR1(I)
- Refutation
- Q(b);CHECK,XQ(I)
- Try
- R(C);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::R1(C),XQ(b)
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Q(I);CHECK
- Vars
- S(f);CHECK,N_GUARD,P_SPINS(f)::QAR1(I),XS(f)
- Refutation
- K(d);CHECK,P-FLIGHT,P_SPINQ(b),XS(F)
- Try
- P(D);CHECK
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- S(F);
- Threat
- QAB1(I),XQ(b)
- Vars
- Q(b);CHECK,XQ(I)::S(F),XQ(b)
- S(f);CHECK,N_GUARD::QAR1(I),XS(f)
- Q(b);N_GUARD::QAB1(I)
- S(f);N_GUARD::QAR1(I)
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).