MESON Chess Problem Database
Problem Display
PID: 88764 (4kB2/3pPp2/8/8/8/3KQ3/8/8 w - - 0 1)
Lincoln, Robert A
The Problemist, 1992
#2
4 + 3
| 5454 | Near Snap | 2009 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Tries
- 1.Qc5?
- threat
- 2.Qc8#
- 1...f6
- 2.Qh5#
- 1...f5!
- threat
- 1.Qg5?
- 1...d6
- 2.Qb5#
- 1...f5
- 2.Qh5#
- 2.Qg6#
- 1...f6
- 2.Qh5#
- 2.Qg6#
- 1...d5!
- 1...d6
- 1.Qb6?
- threat
- 2.Qd8#
- 2.Qb8#
- 1...d5
- 2.Qd8#
- 2.Qb5#
- 2.Qc6#
- 1...d6
- 2.Qd8#
- 2.Qb5#
- 2.Qc6#
- 1...f5
- 2.Qg6#
- 1...f6!
- threat
- 1.Qh6?
- 1...d5
- 2.Qc6#
- 1...f5
- 2.Qh5#
- 2.Qg6#
- 1...f6
- 2.Qh5#
- 2.Qg6#
- 1...d6!
- 1...d5
- 1.Qf3?
- threat
- 2.Qa8#
- 1...d6
- 2.Qc6#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...d5!
- threat
- 1.Qe4?
- threat
- 2.Qa8#
- 1...d5
- 2.Qa4#
- 1...d6
- 2.Qc6#
- 2.Qa4#
- 1...f6
- 2.Qg6#
- 1...f5!
- threat
- 1.Qc5?
- Keys
- 1.Qh3!
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...d5
- 2.Qc8#
- 1...d6
- 2.Qc8#
- 1...f5
- 1.Qh3!
Anticipated by 17613(1948)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- P(b);OGATEB::QAB(B)
- Refutation
- P(b);
- Try
- Q(B);
- Vars
- P(a);OGATEB::QAB(B)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(b);OGATEB::QAB(B)
- Refutation
- P(b);
- Try
- Q(B);
- Vars
- P(a);OGATEB::QAB(B)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- P(a);OGATEB::QAB(B)
- P(b);OGATEB::QAB(B)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- P(a);OGATEB::QAB(B)
- P(b);OGATEB::QAB(B)
- Refutation
- P(b);
- Try
- Actual
- Q(B);
- Vars
- P(b);OGATEB::QAB(B)
- P(a);OGATE::QAR2(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).