MESON Chess Problem Database
Problem Display
PID: 141624 (8/6p1/7N/7k/6N1/7K/8/6Q1 w - - 0 1)
Lincoln, Robert A
The Problemist, 2011
#2
4 + 2
SOLUTION
- SOUND
- Sets
- 1...gxh6
- 2.Sf6#
- 1...gxh6
- Tries
- 1.Se5?
- threat
- 2.Qg6#
- 1...Kxh6
- 2.Qg6#
- 1...g6
- 2.Qxg6#
- 1...g5!
- threat
- 1.Qe3?
- 1...gxh6
- 2.Qxh6#
- 1...g5
- 2.Qe8#
- 1...g6
- 2.Sf6#
- 1...Kg6!
- 1...gxh6
- 1.Qc5+?
- 1...Kg6
- 2.Qf5#
- 1...g5!
- 1...Kg6
- 1.Qf1?
- 1...Kg5
- 2.Qf5#
- 1...Kg6
- 2.Qf5#
- 1...gxh6
- 2.Qf5#
- 1...g5
- 2.Qf7#
- 1...g6!
- 1...Kg5
- 1.Se5?
- Keys
- 1.Qf2!
- 1...Kg5
- 2.Qf5#
- 1...Kg6
- 2.Qf5#
- 1...gxh6
- 2.Qf5#
- 1...g5
- 2.Qf7#
- 1...g6
- 2.Qh4#
- 1...Kg5
- 1.Qf2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- P(b);N_GUARD,SBLOCK,XS(D)::S(C)
- Tries
- Try
- S(C);
- Threat
- QAB1(A)
- Vars
- K(a);P-FLIGHT,XS(D)::QAR1(A)
- P(b);::QAB1(A),XP(b)
- Refutation
- P(b);
- Try
- Q(A);
- Vars
- P(b);OGATE,XS(D)::QAR1(A),XP(b)
- P(b);N_GUARD,SBLOCK::QAB(A)
- P(b);N_GUARD,SBLOCK::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- K(a);S_FLIGHT::QAB1(A)
- Refutation
- P(b);P_SPINP(b)
- Try
- Q(A);
- Vars
- K(a);P-FLIGHT::QAR1(A)
- K(a);S_FLIGHT::QAB1(A)
- P(b);N_GUARD,XS(D)::QAR2(A)
- P(b);N_GUARD,SBLOCK::QAB(A)
- Refutation
- P(b);
- Try
- Actual
- Q(A);
- Vars
- K(a);P-FLIGHT::QAR1(A)
- K(a);S_FLIGHT::QAB1(A)
- P(b);N_GUARD,XS(D)::QAR2(A)
- P(b);N_GUARD,SBLOCK::QAB(A)
- P(b);SBLOCK::QAR1(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).