MESON Chess Problem Database
Problem Display
PID: 77138 (6K1/2p5/3p1p2/1Bpk1P2/N6R/p5PQ/3PR1N1/q7 w - - 0 1)
Petite, Efren
Die Schwalbe, 2007
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Sxc3#
- 1...Qb1
- 2.Sc3#
- 1...Qd1
- 2.Sc3#
- 1...Qe1
- 2.Sc3#
- 1...Qf1
- 2.Sc3#
- 1...Qg1
- 2.Sc3#
- 1...Qh1
- 2.Sc3#
- 1...Qa2
- 2.Sc3#
- 1...c6
- 2.Sb6#
- 2.Bc4#
- 1...Qc3
- Tries
- 1.Ree4?
- threat
- 2.Se3#
- 1...Qc3
- 2.Sxc3#
- 1...Qe1
- 2.Sc3#
- 1...Qg1
- 2.Sc3#
- 1...Qd4!
- threat
- 1.Rhe4?
- threat
- 2.Sf4#
- 1...Qf1
- 2.Sc3#
- 1...Qe5!
- threat
- 1.Qg4?
- threat
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Qc3
- 2.Sxc3#
- 2.Qe4#
- 1...Qe5
- 2.Qc4#
- 1...Qb1
- 2.Sc3#
- 2.Qc4#
- 1...Qc1
- 2.Qf3#
- 2.Qe4#
- 1...Qf1
- 2.Sc3#
- 2.Qc4#
- 2.Qe4#
- 1...Qa2
- 2.Sc3#
- 2.Qf3#
- 2.Qe4#
- 1...c4
- 2.Qf3#
- 2.Qxc4#
- 2.Qe4#
- 1...Qd4!
- threat
- 1.Ree4?
- Keys
- 1.Qh1!
- threat
- 2.Se1#
- 1...Qxh1
- 2.Sc3#
- 1...Qd4
- 2.Sf4#
- 1...Qc3
- 2.Sxc3#
- 1...Qe5
- 2.Se3#
- 1...Qb1
- 2.Sc3#
- 1...Qe1
- 2.Sxe1#
- 2.Sc3#
- 1...Qf1
- 2.Sc3#
- 1...Qg1
- 2.Sc3#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::S(F),XQ(a)
- Q(a);N_GUARD::S(F)
- Tries
- Try
- R(B);
- Threat
- S(C)
- Vars
- Q(a);N_GUARD::S(F),XQ(a)
- Q(a);N_GUARD::S(F)
- Refutation
- Q(a);
- Try
- R(G);
- Threat
- S(C)
- Vars
- Q(a);N_GUARD::S(F)
- Refutation
- Q(a);
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(a);::QAB1(E)
- Refutation
- Q(a);
- Try
- Actual
- Q(E);
- Threat
- QAB(E)+S(C)
- Vars
- Q(a);N_GUARD,XQ(E)::S(F)
- Q(a);SBLOCK::QAB(E)+S(C),DCHECK
- Q(a);N_GUARD::S(F),XQ(a)
- Q(a);N_GUARD::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).