MESON Chess Problem Database
Problem Display
PID: 109160 (8/2N1Q1n1/6K1/4p3/3pkp2/2n5/5P2/4N3 w - - 0 1)
Petkov, Petko Andonov
Themes-64, 1959
#2
5 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...d3
- 2.Qb4#
- 1...f3
- 2.Qh4#
- 1...d3
- Tries
- 1.Qf8?
- 1...d3
- 2.Qb4#
- 1...Sf5
- 2.Qxf5#
- 1...Sb1
- 2.Qa8#
- 1...Sd1
- 2.Qa8#
- 1...Sa2
- 2.Qa8#
- 1...Se2
- 2.Qa8#
- 1...Sa4
- 2.Qa8#
- 1...Sb5
- 2.Qa8#
- 1...Sh5
- 2.Qf5#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...f3
- 2.Qxf3#
- 1...Sd5!
- 1...d3
- 1.Qe6?
- 1...d3
- 2.Qc4#
- 1...f3
- 2.Qg4#
- 1...Sf5
- 2.Qxf5#
- 1...Sb1
- 2.Qd5#
- 2.Qc6#
- 1...Sd1
- 2.Qd5#
- 2.Qc6#
- 1...Sa2
- 2.Qd5#
- 2.Qc6#
- 1...Se2
- 2.Qd5#
- 2.Qc6#
- 1...Sa4
- 2.Qd5#
- 2.Qc6#
- 1...Sb5
- 2.Qd5#
- 2.Qc6#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...Sxe6!
- 1...d3
- 1.Qd7?
- 1...f3
- 2.Qg4#
- 1...Sf5
- 2.Qxf5#
- 1...Sb1
- 2.Qc6#
- 2.Qd5#
- 1...Sd1
- 2.Qc6#
- 2.Qd5#
- 1...Sa2
- 2.Qc6#
- 2.Qd5#
- 1...Se2
- 2.Qc6#
- 2.Qd5#
- 1...Sa4
- 2.Qc6#
- 2.Qd5#
- 1...Sb5
- 2.Qc6#
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...d3
- 2.Qxd3#
- 1...Se6!
- 1...f3
- 1.Qf8?
- Keys
- 1.Qf7!
- 1...d3
- 2.Qc4#
- 1...Sf5
- 2.Qxf5#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qf5#
- 1...Se6
- 2.Qf5#
- 1...Se8
- 2.Qf5#
- 1...f3
- 2.Qxf3#
- 1...d3
- 1.Qf7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- P(b);OGATEB::QAR(E)
- P(d);OGATEB::QAR(E)
- Tries
- Try
- Q(E);N_PINP(e)
- Vars
- P(b);OGATEB::QAR(E)
- S(f);N_GUARD::QAB1(E),XS(f)
- S(a);N_GUARD::QAB(E)
- S(f);N_GUARD::QAB1(E)
- P(d);OGATE::QAB1(E),XP(d)
- Refutation
- S(a);
- Try
- Q(E);
- Vars
- P(b);OGATEB::QAR2(E)
- P(d);OGATEB::QAR2(E)
- S(f);N_GUARD::QAB1(E),XS(f)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(f);N_GUARD::QAB1(E)
- Refutation
- S(f);N_SPINP(e),XQ(E)
- Try
- Q(E);N_PINP(e)
- Vars
- P(d);OGATEB::QAR2(E)
- S(f);N_GUARD::QAB1(E),XS(f)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(f);N_GUARD::QAB1(E)
- P(b);OGATE::QAB1(E),XP(b)
- Refutation
- S(f);
- Try
- Actual
- Q(E);N_PINP(e)
- Vars
- P(b);OGATEB::QAR2(E)
- S(f);N_GUARD::QAB1(E),XS(f)
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(f);N_GUARD::QAB1(E)
- P(d);OGATE::QAB1(E),XP(d)
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).