MESON Chess Problem Database
Problem Display
PID: 271078 (3B4/2PNPpp1/1n1kbnp1/8/1PBN4/6q1/7Q/K2RR3 w - - 0 1)
Hoek, Willem
Probleemblad, 1951
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxd7
- 2.Qxg3#
- 1...Sbxd7
- 2.c8S#
- 1...Sfxd7
- 2.e8S#
- 1...Bxd7
- Tries
- 1.Sxf6?
- threat
- 2.Qxg3#
- 2.e8S#
- 1...Qxh2
- 2.e8S#
- 1...Sxc4
- 2.e8S#
- 1...Qf4
- 2.Qxf4#
- 2.e8S#
- 1...Qe5
- 2.Qxe5#
- 2.e8S#
- 1...Bd7
- 2.Qxg3#
- 1...Sd5
- 2.e8S#
- 1...Sd7
- 2.Se8#
- 2.c8S#
- 2.e8S#
- 1...gxf6!
- threat
- 1.Sb8?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Qxg3#
- 1...Qxh2
- 2.Sb5#
- 2.Sf5#
- 1...Bxc4
- 2.Sb5#
- 2.Sf5#
- 1...Sxc4
- 2.Sb5#
- 2.Sf5#
- 1...Bd5
- 2.Sb5#
- 2.Qxg3#
- 1...Qf4
- 2.Sb5#
- 2.Sf5#
- 2.Qxf4#
- 1...Qe5
- 2.Qxe5#
- 1...Bf5
- 2.Sb5#
- 2.Sxf5#
- 2.Qxg3#
- 1...Sbd5
- 2.Sb5#
- 1...Sbd7
- 2.Sb5#
- 2.Sf5#
- 2.c8S#
- 1...Sg4
- 2.Sb5#
- 2.Sf5#
- 2.e8S#
- 1...Sfd5
- 2.Sb5#
- 2.e8S#
- 1...Sh5
- 2.Sb5#
- 2.Sf5#
- 2.e8S#
- 1...Sfd7
- 2.Sb5#
- 2.Sf5#
- 2.e8S#
- 1...Se4!
- threat
- 1.c8Q?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Qxg3#
- 2.Qc6#
- 2.Qc7#
- 1...Qxh2
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 2.Qc7#
- 1...Bxc4
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 1...Bxd7
- 2.Sb5#
- 2.Sf5#
- 2.Bc7#
- 2.Qxg3#
- 2.Qc5#
- 2.Qc7#
- 2.Qb8#
- 1...Sxc4
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 1...Sbxd7
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 2.Qc7#
- 1...Sfxd7
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 2.Qc7#
- 2.e8S#
- 1...Bd5
- 2.Sb5#
- 2.Bc7#
- 2.Qxg3#
- 2.Qc7#
- 1...Qf4
- 2.Sb5#
- 2.Sf5#
- 2.Qxf4#
- 2.Qc6#
- 2.Qc7#
- 1...Qe5
- 2.Qxe5#
- 2.Qc6#
- 2.Qc7#
- 1...Bf5
- 2.Sb5#
- 2.Sxf5#
- 2.Bc7#
- 2.Qxg3#
- 2.Qc6#
- 2.Qc7#
- 1...Sbd5
- 2.Sb5#
- 2.Qc6#
- 1...Sa8
- 2.Sb5#
- 2.Sf5#
- 2.Qxg3#
- 2.Qc6#
- 1...Se4
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 2.Qc7#
- 2.e8S#
- 1...Sg4
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 2.Qc7#
- 2.e8S#
- 1...Sfd5
- 2.Sb5#
- 2.Qc6#
- 2.e8S#
- 1...Sh5
- 2.Sb5#
- 2.Sf5#
- 2.Qc6#
- 2.Qc7#
- 2.e8S#
- 1...Se8
- 2.Sb5#
- 2.Sf5#
- 2.Qxg3#
- 2.Qc6#
- 1...Sxc8!
- threat
- 1.Sxf6?
- Keys
- 1.Bb5!
- threat
- 2.Sf5#
- 1...Kd5
- 2.Sf3#
- 1...Bd5
- 2.Qxg3#
- 1...Qe5
- 2.Qxe5#
- 1...Bf5
- 2.Sxf5#
- 1...Sbd5
- 2.c8S#
- 1...Sfd5
- 2.e8S#
- threat
- 1.Bb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- B(d);SBLOCK,XS(I)::QAB(D),XQ(a)
- S(b);N_GUARD,SBLOCK,XS(I)::P=S
- S(e);N_GUARD,SBLOCK,XS(I)::P=S
- Tries
- Try
- S(I);XS(e)
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINQ(a),XQ(D)::P=S
- S(b);XB(F)::P=S
- B(d);::QAB(D),XQ(a)
- S(b);::P=S
- Refutation
- P(h);XS(I)
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- Q(a);OGATE,P_PINS(G)::QAB1(D),XQ(a)
- S(b);::S(G)
- Refutation
- S(e);
- Try
- P(H);
- Threat
- DUALS(5)
- Refutation
- S(b);XQ(H)
- Try
- Actual
- B(F);
- Threat
- R(B)+S(G),DCHECK
- Vars
- K(c);N_SPINQ(a),P-FLIGHT,S_CUTB(d),S_CUTS(b),S_CUTS(e)::R(B)+S(G)
- B(d);SBLOCK::QAB(D),XQ(a)
- Q(a);OGATE,P_PINS(G)::QAB1(D),XQ(a)
- B(d);::R(B)+S(G),DCHECK,XB(d)
- S(b);N_GUARD,SBLOCK::P=S
- S(e);N_GUARD,SBLOCK::P=S
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).