MESON Chess Problem Database

Problem Display
PID: 225326 (2bk1N2/8/2Q1P1K1/8/7b/8/8/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2004

2bk1N2/8/2Q1P1K1/8/7b/8/8/8

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qd7#
    • 1...Bb7
      • 2.Qd7#
    • 1...Bd7
      • 2.Qxd7#
  • Tries
    • 1.Qd6+?
      • 1...Bd7
        • 2.Qxd7#
      • 1...Ke8!
  • Keys
    • 1.Kf7!
      • threat
        • 2.Qb6#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...Bf2
        • 2.e7#
      • 1...Bg3
        • 2.e7#
      • 1...Ba6
        • 2.Qd7#
      • 1...Bb7
        • 2.Qd7#
      • 1...Bd7
        • 2.Qxd7#

FEATURES

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