MESON Chess Problem Database
Problem Display
PID: 180662 (1R6/1n6/8/6Q1/kPR5/8/8/1K6 w - - 0 1)
Lincoln, Robert A
StrateGems, 2017
#2
5 + 2
SOLUTION
- SOUND
- Tries
- 1.Ka2?
- 1...Sa5
- 2.Qxa5#
- 2.Qb5#
- 2.bxa5#
- 1...Sd6
- 2.Ra8#
- 2.Qa5#
- 1...Sd8
- 2.Ra8#
- 2.Qa5#
- 2.Qb5#
- 1...Sc5!
- 1...Sa5
- 1.Kb2?
- 1...Sa5
- 2.Qxa5#
- 2.Qb5#
- 2.bxa5#
- 1...Sd6
- 2.Ra8#
- 2.Qa5#
- 1...Sd8
- 2.Ra8#
- 2.Qa5#
- 2.Qb5#
- 1...Sc5!
- 1...Sa5
- 1.Qd2?
- 1...Ka3
- 2.Qa2#
- 1...Kb3
- 2.Qa2#
- 1...Sc5
- 2.Qa2#
- 1...Sa5
- 2.Qa2#
- 1...Sd6
- 2.Qa2#
- 1...Sd8
- 2.Qa2#
- 1...Kb5!
- 1...Ka3
- 1.Qa5+?
- 1...Kb3
- 2.Qa2#
- 1...Sxa5!
- 1...Kb3
- 1.Ka2?
- Keys
- 1.Qg2!
- 1...Ka3
- 2.Qa2#
- 1...Kb3
- 2.Qa2#
- 1...Kb5
- 2.Qc6#
- 1...Sc5
- 2.Qa2#
- 1...Sa5
- 2.Qa2#
- 1...Sd6
- 2.Qa2#
- 1...Sd8
- 2.Qa2#
- 1...Ka3
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Tries
- Try
- K(A);S_FLIGHT
- Refutation
- S(b);
- Try
- K(A);P-FLIGHT
- Refutation
- S(b);
- Try
- Q(D);
- Vars
- K(a);P-FLIGHT::QAR1(D)
- K(a);S_FLIGHT::QAB1(D)
- S(b);::QAR2(D)
- Refutation
- K(a);P_SPINS(b),S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- K(a);OGATE,S_FLIGHT::QAB1(D)
- Refutation
- S(b);XQ(D)
- Try
- Actual
- Q(D);
- Vars
- K(a);P-FLIGHT::QAR1(D)
- K(a);S_FLIGHT::QAB1(D)
- K(a);P_SPINS(b),S_FLIGHT::QAB1(D)
- S(b);::QAR2(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).