MESON Chess Problem Database
Problem Display
PID: 169248 (8/2Q5/8/5p2/1N1pk2P/8/5K2/8 w - - 0 1)
Lincoln, Robert A
SuperProblem, 2017
#2
4 + 3
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Tries
- 1.Kg3?
- threat
- 2.Qf4#
- 2.Qe7#
- 1...f4+
- 2.Qxf4#
- 1...d3
- 2.Qf4#
- 1...Ke3!
- threat
- 1.Qg3?
- 1...d3
- 2.Qe3#
- 1...f4!
- 1...d3
- 1.Qb6?
- 1...Kf4
- 2.Qxd4#
- 1...d3
- 2.Qe3#
- 1...f4
- 2.Qe6#
- 1...Ke5!
- 1...Kf4
- 1.Qd6?
- 1...f4
- 2.Qd5#
- 2.Qe6#
- 1...d3!
- 1...f4
- 1.Qc4?
- 1...Kf4
- 2.Qxd4#
- 1...f4
- 2.Qd5#
- 2.Qe6#
- 1...Ke5!
- 1...Kf4
- 1.Qc6+?
- 1...Ke5
- 2.Sd3#
- 1...Kf4!
- 1...Ke5
- 1.Kg3?
- Keys
- 1.Qc5!
- 1...Kf4
- 2.Qxd4#
- 1...d3
- 2.Qe3#
- 1...f4
- 2.Qd5#
- 1...Kf4
- 1.Qc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Tries
- Try
- K(A);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- P(c);CHECK::QAR1(D),XP(c)
- P(a);::QAR1(D)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(D);
- Vars
- P(a);N_GUARD::QAR1(D)
- Refutation
- P(c);
- Try
- Q(D);
- Vars
- K(b);P-FLIGHT::QAR2(D),XP(a)
- P(a);OGATE::QAR1(D)
- P(c);SBLOCK::QAR2(D)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(D);
- Refutation
- P(a);
- Try
- Q(D);P_PINP(a)
- Vars
- K(b);P-FLIGHT::QAR2(D),XP(a)
- Refutation
- K(b);N_SPINP(a),P-FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::S(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(D);
- Vars
- K(b);P-FLIGHT::QAR2(D),XP(a)
- P(a);OGATE::QAR1(D)
- P(c);SBLOCK::QAB1(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).