MESON Chess Problem Database
Problem Display
PID: 7970 (2BB4/8/8/1k1K4/r2p4/8/8/4Q3 w - - 0 1)
Lincoln, Robert A
Atlantic Chess News, 1995
#2
4 + 3
| 2838 | Fun with Chess Miniatures | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Qe8#
- 1...Rc4
- 2.Qa5#
- 1...Ra5
- 2.Qxa5#
- 1...Rb4
- Tries
- 1.Qc3?
- threat
- 2.Qc5#
- 1...Ra1
- 2.Qb3#
- 2.Qc4#
- 1...Ra2
- 2.Qb3#
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qc6#
- 1...Rc4
- 2.Qa5#
- 2.Qxc4#
- 1...Ra5
- 2.Qxa5#
- 2.Qb3#
- 2.Qc4#
- 1...Ra6
- 2.Qb3#
- 2.Qc4#
- 1...Ra7
- 2.Qb3#
- 2.Qc4#
- 1...Ra8
- 2.Qb3#
- 2.Qc4#
- 1...dxc3!
- threat
- 1.Qe2+?
- 1...Kb4
- 2.Qb2#
- 1...Rc4
- 2.Qxc4#
- 1...d3!
- 1...Kb4
- 1.Qc3?
- Keys
- 1.Qc1!
- threat
- 2.Qc5#
- 1...Kb4
- 2.Qb2#
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Ra8
- 2.Qc4#
- 1...Rb4
- 2.Qc6#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(a);SBLOCK::QAB(A)
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- Tries
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(a);N_GUARD::QAB1(A)
- R(a);SBLOCK::QAB1(A)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(c);P-FLIGHT::QAR2(A)
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- P(b);P_SPINP(b)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A)
- Vars
- K(c);P-FLIGHT::QAR2(A)
- R(a);N_GUARD::QAB1(A)
- R(a);N_GUARD::QAB1(A),XR(a)
- R(a);SBLOCK::QAB1(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).