MESON Chess Problem Database
Problem Display
PID: 61342 (6K1/3pN1p1/3Bk3/4P3/4P3/5p2/8/6qn w - - 0 1)
Lester, John Aldrich
Chess Life, 1960
#2
5 + 6
SOLUTION
- SOUND
- Tries
- 1.Sd5?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Qh2
- 2.Sc7#
- 1...Qe3
- 2.Sc7#
- 1...Qc5
- 2.Sf4#
- 1...Qb6
- 2.Sf4#
- 1...Qa7
- 2.Sf4#
- 1...Qg3
- 2.Sc7#
- 1...Qg4
- 2.Sc7#
- 1...Qg5
- 2.Sc7#
- 1...g5
- 2.Sc7#
- 1...Qc1!
- threat
- 1.Sg6?
- threat
- 2.Sf4#
- 2.Sf8#
- 1...Qh2
- 2.Sf8#
- 1...Qe3
- 2.Sf8#
- 1...Qc1
- 2.Sf8#
- 1...Qg3
- 2.Sf8#
- 1...Qg4
- 2.Sf8#
- 1...Qg5
- 2.Sf8#
- 1...Qxg6!
- threat
- 1.Sd5?
- Keys
- 1.Sf5!
- 1...Qf2
- 2.Sxg7#
- 1...Qh2
- 2.Sd4#
- 2.Sxg7#
- 1...Qe3
- 2.Sxg7#
- 1...Qd4
- 2.Sxd4#
- 2.Sxg7#
- 1...Qc5
- 2.Sxg7#
- 1...Qb6
- 2.Sxg7#
- 1...Qa7
- 2.Sxg7#
- 1...Qa1
- 2.Sxg7#
- 1...Qb1
- 2.Sd4#
- 2.Sxg7#
- 1...Qc1
- 2.Sd4#
- 2.Sxg7#
- 1...Qd1
- 2.Sxg7#
- 1...Qe1
- 2.Sd4#
- 2.Sxg7#
- 1...Qf1
- 2.Sd4#
- 2.Sxg7#
- 1...Qg2
- 2.Sd4#
- 1...Qg3
- 2.Sd4#
- 1...Qg4
- 2.Sd4#
- 1...Qg5
- 2.Sd4#
- 1...Qg6
- 2.Sd4#
- 1...Sf2
- 2.Sd4#
- 1...Sg3
- 2.Sxg7#
- 1...f2
- 2.Sd4#
- 1...g5
- 2.Sg7#
- 1...g6
- 2.Sg7#
- 1...Qf2
- 1.Sf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 17
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(a);::S(D)
- P(f);::S(D)
- Refutation
- Q(a);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(a);::S(D)
- Refutation
- Q(a);XS(D)
- Try
- Actual
- S(D);
- Vars
- Q(a);N_GUARD::S(D),XP(f)
- Q(a);N_GUARD::S(D)
- S(b);S_CUTQ(a)::S(D)
- S(b);S_CUTQ(a)::S(D),XP(f)
- P(c);S_CUTQ(a)::S(D)
- P(f);S_CUTQ(a)::S(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).