MESON Chess Problem Database

Problem Display
PID: 262748 (K7/2Q5/8/3k2P1/B7/nP1p1P1b/8/b5B1 w - - 0 1)

Koci, Vladimir

Comm., SuperProblem, 2013

K7/2Q5/8/3k2P1/B7/nP1p1P1b/8/b5B1

#2

7 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qc6#
    • 1...Be6
      • 2.Bc6#
      • 2.Qc5#
  • Tries
    • 1.Qd7+?
      • 1...Ke5
        • 2.Bh2#
      • 1...Bxd7!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qe5#
      • 1...Ke6
        • 2.Qd7#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT,S_CUTB(d)::B(A)
      • Refutation
        • B(d);XQ(F)
  • Actual
    • B(A);
    • Threat
      • QAR1(F)
    • Vars
      • K(e);P-FLIGHT,S_CUTB(a)::QAB1(F)
      • K(e);N_GUARD,S_CUTB(d),S_FLIGHT::QAB1(F)
      • B(a);N_GUARD::QAR1(F),XB(a)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • S(b);N_GUARD::QAB1(F)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).