MESON Chess Problem Database

Problem Display
PID: 172555 (2nBk2K/8/2P5/8/8/3Q4/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2004

2nBk2K/8/2P5/8/8/3Q4/8/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6+?
      • 1...Kf8
        • 2.Qg8#
      • 1...Kxd8!
    • 1.Qd5?
      • threat
        • 2.Qg8#
      • 1...Kf8
        • 2.Qg8#
      • 1...Se7!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qg8#
      • 1...Kxd8
        • 2.Qd7#
      • 1...Kf8
        • 2.Qg8#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);P-FLIGHT,XB(C)::QAR1(A)
      • K(b);P-FLIGHT::QAR1(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).