MESON Chess Problem Database

Problem Display
PID: 203206 (2Q5/8/6p1/3p2P1/3N1k2/2BP2n1/8/1K6 w - - 0 1)

Fiala, Karel

Prachensky kraj, 1924

2Q5/8/6p1/3p2P1/3N1k2/2BP2n1/8/1K6

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qc7#
      • 2.Qb8#
  • Tries
    • 1.Qg4+?
      • 1...Ke3
        • 2.Qf3#
        • 2.Qxg3#
      • 1...Ke5
        • 2.Qxg3#
      • 1...Kxg4!
  • Keys
    • 1.Qh3!
      • 1...Ke3
        • 2.Qxg3#
      • 1...Ke5
        • 2.Qxg3#
      • 1...Kxg5
        • 2.Se6#
      • 1...Sf1
        • 2.Se6#
      • 1...Sh1
        • 2.Se6#
      • 1...Se2
        • 2.Se6#
      • 1...Se4
        • 2.Se6#
      • 1...Sf5
        • 2.Se6#
      • 1...Sh5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(F),XS(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(F)
  • Actual
    • Q(F);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT::QAR2(F),XS(a)
      • K(b);S_FLIGHT::QAB(F),XS(a)
      • K(b);S_FLIGHT,XP(E)::S(D)
      • S(a);::S(D)
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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).