MESON Chess Problem Database
Problem Display
PID: 12059 (4R2b/1n3p2/1N2qp2/8/R1NBk3/1pK5/2pP1Q2/2rr4 w - - 0 1)
Goldschmeding, Cornelis
1st HM., KeyStip 13. Ty., 1974
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qe7
- 2.Rxe7#
- 1...Re1
- 2.d3#
- 1...Rf1
- 2.d3#
- 1...Rg1
- 2.d3#
- 1...Rh1
- 2.d3#
- 1...Rxd2
- 2.Sxd2#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...f5
- 2.Qe3#
- 1...Qe7
- Tries
- 1.Se3?
- threat
- 2.Bxf6#
- 2.Qf5#
- 1...Qxe8
- 2.Qf5#
- 1...Rxd2
- 2.Qf5#
- 1...Qe5
- 2.Bxe5#
- 2.Qf5#
- 1...Ra1
- 2.Qf5#
- 1...Rf1
- 2.Bxf6#
- 2.d3#
- 1...Sa5
- 2.Qf5#
- 1...Sc5
- 2.Qf5#
- 1...f5
- 2.Bf6#
- 2.Bg7#
- 2.Bxh8#
- 2.Qxf5#
- 1...Sd6!
- threat
- 1.Se5?
- threat
- 2.Qf3#
- 1...Qh3+
- 2.Be3#
- 1...Qc4+
- 2.Sexc4#
- 1...Qc8+
- 2.Bc5#
- 1...Qc6+
- 2.Sxc6#
- 1...Qxe5
- 2.Bxe5#
- 1...Qg4
- 2.Sxg4#
- 2.Be3#
- 2.Bc5#
- 1...Qf5
- 2.Be3#
- 2.Bc5#
- 2.Qe3#
- 1...Rf1
- 2.d3#
- 1...fxe5!
- threat
- 1.Be3?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Rf1
- 2.d3#
- 1...f5+!
- threat
- 1.Bxf6?
- threat
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sd6#
- 1...Qe5+
- 2.Sxe5#
- 2.Rxe5#
- 1...Qxe8
- 2.Sd6#
- 1...Rxd2
- 2.Sxd2#
- 2.Sd6#
- 1...Ra1
- 2.Sa3#
- 2.Sd6#
- 1...Sa5
- 2.Sxa5#
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...b2
- 2.Sxb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sd6#
- 1...Bxf6+!
- threat
- 1.Ra5?
- threat
- 2.Qe3#
- 2.Qf5#
- 1...Sxa5
- 2.Sd6#
- 1...Re1
- 2.Qf5#
- 2.d3#
- 1...Rf1
- 2.Qe3#
- 2.d3#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 2.Qe3#
- 1...f5
- 2.Qe3#
- 2.Qxf5#
- 1...Qe5!
- threat
- 1.Se3?
- Keys
- 1.Be5!
- threat
- 2.Qf4#
- 1...Qh3+
- 2.Se3#
- 1...Qxc4+
- 2.Rxc4#
- 1...Qxe5+
- 2.Sxe5#
- 1...Qxb6
- 2.Sxb6#
- 1...fxe5
- 2.Sd6#
- 1...Qg4
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sd6#
- 1...Qf5
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sd6#
- 2.Qe3#
- 2.Qe2#
- 1...Rf1
- 2.d3#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 10
- Sets
- Q(f);OGATEB::R(H),XQ(f)
- R(b);N_GUARD::P(A)
- R(b);XP(A)::S(E),XR(b)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(g);P_PINB(F),SBLOCK::QAR1(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);N_SPINQ(f),XR(H)::QAB1(B)
- R(b);XP(A)::QAB1(B)
- R(a);::QAB1(B)
- S(h);::QAB1(B)
- Refutation
- S(h);
- Try
- S(E);N_PINQ(f)
- Threat
- QAB1(B)
- Vars
- Q(f);CHECK,N_GUARD::R(D)+B(F)
- Q(f);CHECK::R(H)+S(E),XQ(f)
- Q(f);OGATE,P_PINB(F),P_SPINQ(f),XS(E)::R(D)+B(F),XQ(f)
- R(b);N_GUARD::P(A)
- Refutation
- P(g);XS(E)
- Try
- B(F);
- Threat
- QAR1(B)
- Vars
- Q(f);CHECK,N_GUARD::R(D)+S(E),XQ(f)
- R(b);N_GUARD::P(A)
- Refutation
- P(g);CHECK
- Try
- B(F);P_SPINB(F),XP(g)
- Threat
- DUALS(5)
- Vars
- Q(f);N_SPINQ(f),XR(H)::R(D)+S(E),DCHECK
- S(h);::R(D)+S(E),DCHECK
- S(h);::R(D)+S(E),DCHECK,XS(h)
- Refutation
- B(j);CHECK,XB(F)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD,XR(D)::S(E)
- S(h);N_GUARD::S(E)
- Refutation
- Q(f);P_PINB(F)
- Try
- Actual
- B(F);N_PINQ(f)
- Threat
- QAR1(B)
- Vars
- Q(f);CHECK,N_GUARD::R(D)+S(E)
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(E)::R(D),XQ(f)
- Q(f);CHECK,P_SPINQ(f),XB(F)::R(D)+S(E),XQ(f)
- Q(f);XS(G)::R(D)+S(E),XQ(f)
- P(g);SBLOCK,XB(F)::R(D)+S(E),DCHECK
- R(b);N_GUARD::P(A)
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).