MESON Chess Problem Database

Problem Display
PID: 81323 (7k/6p1/5N2/7P/5B2/6Q1/8/4K3 w - - 0 1)

Antipov, Viacheslav Pavlovich

Novgorodskaya pravda, 1984

7k/6p1/5N2/7P/5B2/6Q1/8/4K3

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qf8#
        • 2.Qa8#
      • 1...g5
        • 2.Qf8#
      • 1...g6
        • 2.Qf8#
      • 1...gxf6!
    • 1.Qb3?
      • threat
        • 2.Qg8#
        • 2.Qb8#
      • 1...g5
        • 2.Qg8#
      • 1...g6
        • 2.Qg8#
      • 1...gxf6!
    • 1.Qg5?
      • 1...g6
        • 2.Qh6#
      • 1...gxf6!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Bxg7#
        • 2.Qb8#
        • 2.Qxg7#
      • 1...gxf6
        • 2.Qg7#
      • 1...gxh6
        • 2.Qg8#
      • 1...g5
        • 2.Qb8#
      • 1...g6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR2(B)
      • Refutation
        • P(a);XS(E)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR1(B)
      • Refutation
        • P(a);XS(E)
    • Try
      • Q(B);
      • Vars
        • P(a);N_GUARD::QAR2(B)
      • Refutation
        • P(a);XS(E)
  • Actual
    • B(C);
    • Threat
      • DUALS(3)
    • Vars
      • P(a);XS(E)::QAB1(B)
      • P(a);OGATE,XB(C)::QAR1(B)
      • P(a);::QAR(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).