MESON Chess Problem Database
Problem Display
PID: 240300 (2k1K1R1/1q6/2P5/2Q1B3/8/8/8/8 w - - 0 1)
Lincoln, Robert A
Problem-Forum, 2016
#2
5 + 2
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Ke7#
- 2.Kf7#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qa8
- 2.Ke7#
- 2.Kf7#
- 1...Qb1
- 2.Ke7#
- 2.Kf7#
- 1...Qb2
- 2.Ke7#
- 2.Kf7#
- 1...Qb4
- 2.Ke7#
- 2.Kf7#
- 1...Qb5
- 2.Ke7#
- 2.Kf7#
- 1...Qe7+
- 2.Kxe7#
- 1...Qf7+
- 2.Kxf7#
- 1...Qb8
- 2.Ke7#
- 2.Kf7#
- 1...Qa6
- Tries
- 1.Qb6?
- threat
- 2.Qd8#
- 2.Qxb7#
- 2.cxb7#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qd7+
- 2.cxd7#
- 1...Qe7+
- 2.Kxe7#
- 1...Qf7+
- 2.Kxf7#
- 1...Qa6
- 2.Ke7#
- 2.Kf7#
- 2.Qc7#
- 2.Qd8#
- 2.Qxa6#
- 2.Qb8#
- 1...Qa8
- 2.Ke7#
- 2.Kf7#
- 2.Qc7#
- 2.Qd8#
- 1...Qa7
- 2.Qd8#
- 1...Qc7
- 2.Qxc7#
- 1...Qg7
- 2.Qd8#
- 2.Qb8#
- 1...Qh7
- 2.Qd8#
- 2.Qb8#
- 1...Qb8
- 2.Ke7#
- 2.Kf7#
- 2.Qd8#
- 2.Qxb8#
- 1...Qxb6!
- threat
- 1.Qe7?
- threat
- 2.Kf7#
- 2.Qd8#
- 2.Qxb7#
- 2.cxb7#
- 1...Qd7+
- 2.Qxd7#
- 1...Qxe7+
- 2.Kxe7#
- 1...Qc7
- 2.Qxc7#
- 1...Qa6
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qc7#
- 2.Qd7#
- 1...Qa8
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qc7#
- 2.Qd7#
- 1...Qb1
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qc7#
- 2.Qd7#
- 1...Qb2
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qc7#
- 2.Qd7#
- 1...Qb3
- 2.Qd8#
- 2.Qc7#
- 2.Qd7#
- 1...Qb4
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qc7#
- 2.Qd7#
- 1...Qb5
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qc7#
- 2.Qd7#
- 1...Qb6
- 2.Qe6#
- 2.Qd7#
- 1...Qa7
- 2.Kf7#
- 2.Qd8#
- 1...Qb8
- 2.Kf7#
- 2.Qd8#
- 2.Qe6#
- 2.Qd7#
- 1...Qxc6+!
- threat
- 1.Qd5?
- threat
- 2.Qd8#
- 2.cxb7#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qd7+
- 2.Qxd7#
- 2.cxd7#
- 1...Qe7+
- 2.Kxe7#
- 1...Qf7+
- 2.Kxf7#
- 1...Qa6
- 2.Ke7#
- 2.Kf7#
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qa8
- 2.Ke7#
- 2.Kf7#
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qb1
- 2.Ke7#
- 2.Kf7#
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qb2
- 2.Ke7#
- 2.Kf7#
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qb3
- 2.Ke7#
- 2.Kf7#
- 2.Qd7#
- 2.Qd8#
- 1...Qb4
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qb5
- 2.Ke7#
- 2.Kf7#
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qb6
- 2.Qe6#
- 2.Qd7#
- 1...Qa7
- 2.Qd8#
- 1...Qg7
- 2.Qd8#
- 1...Qh7
- 2.Qd8#
- 1...Qb8
- 2.Ke7#
- 2.Kf7#
- 2.Qe6#
- 2.Qd7#
- 2.Qd8#
- 1...Qc7!
- threat
- 1.Qb6?
- Keys
- 1.Qd6!
- threat
- 2.Qd8#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qd7+
- 2.Qxd7#
- 1...Qe7+
- 2.Kxe7#
- 1...Qf7+
- 2.Kxf7#
- 1...Qc7
- 2.Qxc7#
- 1...Qb6
- 2.Qe6#
- 2.Qd7#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAR2(A),XQ(a)
- Q(a);CHECK::R(E)+K(D),XQ(a)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATE,XP(C)::QAR2(A),XQ(a)
- Q(a);CHECK,OGATE::P(C),XQ(a)
- Q(a);CHECK::R(E)+K(D),XQ(a)
- Q(a);::QAR1(A)
- Q(a);N_GUARD::QAR1(A),XQ(a)
- Refutation
- Q(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- Q(a);CHECK,N_GUARD::QAB1(A),XQ(a)
- Q(a);CHECK,XQ(A)::R(E)+K(D),XQ(a)
- Q(a);N_GUARD::QAR1(A),XQ(a)
- Refutation
- Q(a);CHECK,XP(C)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,XP(C)::QAR2(A),XQ(a)
- Q(a);CHECK::R(E)+K(D),XQ(a)
- Q(a);::QAR1(A)
- Refutation
- Q(a);
- Try
- Actual
- Q(A);
- Threat
- QAR1(A)
- Vars
- Q(a);CHECK,OGATE,XP(C)::QAR2(A),XQ(a)
- Q(a);CHECK,N_GUARD::QAB1(A),XQ(a)
- Q(a);CHECK::R(E)+K(D),XQ(a)
- Q(a);N_GUARD::QAR1(A),XQ(a)
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).