MESON Chess Problem Database
Problem Display
PID: 133124 (8/2B5/1K2Q3/3pP3/2pkp3/1n1p4/3p4/3N4 w - - 0 1)
Boyer, Jean-Pierre
diagrammes, 1976
#2
5 + 7
SOLUTION
- SOUND
- Sets
- 1...e3
- 2.Qg4#
- 1...e3
- Tries
- 1.Bd6?
- 1...e3
- 2.Qg4#
- 1...Sa1
- 2.Bc5#
- 1...Sc1
- 2.Bc5#
- 1...Sa5
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...c3!
- 1...e3
- 1.Qh3?
- threat
- 2.Qe3#
- 1...e3
- 2.Qg4#
- 2.Qxe3#
- 2.Qh4#
- 1...c3!
- threat
- 1.Qc6?
- 1...Sa1
- 2.Qc5#
- 1...Sc1
- 2.Qc5#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...c3
- 2.Qa4#
- 2.Qxc3#
- 1...e3!
- 1...Sa1
- 1.Qd6?
- 1...c3
- 2.Qb4#
- 1...Sa1
- 2.Qc5#
- 1...Sc1
- 2.Qc5#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...e3!
- 1...c3
- 1.Qf6?
- threat
- 2.e6#
- 1...e3
- 2.Qh4#
- 2.Qf4#
- 1...c3!
- threat
- 1.Qh6?
- threat
- 2.Qe3#
- 1...e3
- 2.Qxe3#
- 2.Qf4#
- 2.Qh4#
- 1...c3!
- threat
- 1.Bd6?
- Keys
- 1.Qe7!
- 1...c3
- 2.Qb4#
- 1...e3
- 2.Qh4#
- 1...Sa1
- 2.Qc5#
- 1...Sc1
- 2.Qc5#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...c3
- 1.Qe7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- P(f);OGATEB::QAR(D)
- Tries
- Try
- B(E);
- Vars
- P(f);OGATEB::QAR(D)
- S(b);N_GUARD::B(E)
- S(b);N_GUARD::B(E),XS(b)
- Refutation
- P(d);
- Try
- Q(D);
- Threat
- QAB1(D)
- Refutation
- P(d);
- Try
- Q(D);
- Vars
- S(b);N_GUARD::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
- Refutation
- P(f);
- Try
- Q(D);P_PINP(g)
- Vars
- P(d);OGATEB::QAR2(D)
- S(b);N_GUARD::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
- Refutation
- P(f);
- Try
- Q(D);
- Threat
- QAB(D)+P(B)
- Refutation
- P(d);
- Try
- Q(D);
- Threat
- QAB1(D)
- Refutation
- P(d);
- Try
- Actual
- Q(D);
- Vars
- P(d);OGATEB::QAR2(D)
- P(f);OGATEB::QAR(D)
- S(b);N_GUARD::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
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).