MESON Chess Problem Database

Problem Display
PID: 225549 (K2B4/5p2/8/4Qp1p/6k1/8/8/6N1 w - - 0 1)

Kichigin, Viktor Vladimirovich

Praca, 1992

K2B4/5p2/8/4Qp1p/6k1/8/8/6N1

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qg5#
  • Tries
    • 1.Bf6?
      • 1...f4
        • 2.Qg5#
      • 1...h4!
    • 1.Qh2?
      • threat
        • 2.Qh4#
      • 1...f4
        • 2.Qh3#
      • 1...h4
        • 2.Qxh4#
      • 1...f6!
    • 1.Qe3?
      • threat
        • 2.Qg5#
        • 2.Qf3#
      • 1...f4
        • 2.Qh3#
      • 1...f6!
  • Keys
    • 1.Bh4!
      • threat
        • 2.Qg3#
      • 1...Kxh4
        • 2.Qf4#
      • 1...f4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::QAR1(B)
  • Tries
    • Try
      • B(D);
      • Vars
        • P(b);OGATE::QAR1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • P(b);SBLOCK::QAB1(B)
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • P(d);
  • Actual
    • B(D);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);P-FLIGHT,XB(D)::QAR2(B)
      • P(b);OGATE::QAR1(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).