MESON Chess Problem Database

Problem Display
PID: 75187 (4KNkb/8/4N1n1/3Q4/8/8/8/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize, Melnichenko-65 JT, 2004

4KNkb/8/4N1n1/3Q4/8/8/8/8

#2

4 + 3

6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qf7#
        • 2.Qh7#
      • 1...Sxf8
        • 2.Qf7#
      • 1...Ba1
        • 2.Qh7#
      • 1...Bb2
        • 2.Qh7#
      • 1...Bc3
        • 2.Qh7#
      • 1...Bd4
        • 2.Qh7#
      • 1...Be5
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Se5
        • 2.Qh7#
      • 1...Se7!
    • 1.Qd7?
      • threat
        • 2.Qf7#
        • 2.Qh7#
      • 1...Sxf8
        • 2.Qf7#
      • 1...Ba1
        • 2.Qh7#
      • 1...Bb2
        • 2.Qh7#
      • 1...Bc3
        • 2.Qh7#
      • 1...Bd4
        • 2.Qh7#
      • 1...Be5
        • 2.Qh7#
      • 1...Bf6
        • 2.Qh7#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Se5
        • 2.Qh7#
      • 1...Se7!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qh7#
      • 1...Sxf8
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XS(D)::QAB1(A)
        • B(c);::QAB1(A)
        • B(c);N_GUARD::QAR1(A),XB(c)
        • S(a);::QAB1(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XS(D)::QAB1(A)
        • B(c);::QAB1(A)
        • B(c);N_GUARD::QAR1(A),XB(c)
        • S(a);::QAB1(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • S(a);OGATE,XS(D)::QAB1(A)
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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).