MESON Chess Problem Database

Problem Display
PID: 92925 (8/5p2/1Q6/3K1kpb/6p1/6P1/8/8 w - - 0 1)

Hermanson, Halvar

Tidskrift for Schack, 1959

8/5p2/1Q6/3K1kpb/6p1/6P1/8/8

#2

3 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Qf2#
    • 1...f6
      • 2.Qb1#
  • Tries
    • 1.Qd4?
      • 1...Bg6
        • 2.Qf2#
        • 2.Qe5#
      • 1...f6
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kg6!
    • 1.Qb2?
      • 1...Bg6
        • 2.Qe5#
        • 2.Qf2#
      • 1...f6
        • 2.Qb1#
        • 2.Qc2#
      • 1...Kg6!
    • 1.Qc6?
      • 1...f6
        • 2.Qc2#
      • 1...Bg6!
    • 1.Qd6?
      • 1...Bg6
        • 2.Qe5#
      • 1...f6!
  • Keys
    • 1.Qa6!
      • 1...f6
        • 2.Qd3#
      • 1...Bg6
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK::QAR(C)
    • P(e);SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(e);SBLOCK::QAB(C)
      • Refutation
        • B(d);
    • Try
      • Q(C);
      • Vars
        • B(d);SBLOCK::QAR1(C)
      • Refutation
        • P(e);
  • Actual
    • Q(C);
    • Vars
      • P(e);SBLOCK::QAB(C)
      • B(d);SBLOCK::QAR(C)
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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).