MESON Chess Problem Database

Problem Display
PID: 206049 (8/6Q1/6pr/7k/8/4N3/6K1/4B3 w - - 0 1)

Tompuri, Ismo

Tehtavaniekka, 2018

8/6Q1/6pr/7k/8/4N3/6K1/4B3

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qe5#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qg4#
        • 2.Qh4#
      • 1...Kg5
        • 2.Qe5#
      • 1...Rh7
        • 2.Qh4#
      • 1...Rh8
        • 2.Qh4#
      • 1...g5!
  • Keys
    • 1.Bh4!
      • 1...Kxh4
        • 2.Qxh6#
      • 1...Rh7
        • 2.Qxh7#
      • 1...Rh8
        • 2.Qxh8#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR2(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
        • R(c);::QAR1(D)
      • Refutation
        • P(b);
  • Actual
    • B(A);
    • Vars
      • K(a);P-FLIGHT,XB(A)::QAR2(D),XR(c)
      • R(c);OGATEB::QAR2(D),XR(c)
      • R(c);OGATEB::QAR(D),XR(c)
      • P(b);OGATE::QAR1(D),XP(b)
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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).