MESON Chess Problem Database

Problem Display
PID: 119936 (1K2k1b1/4PN1p/4n2P/3N4/8/5Q2/8/8 w - - 0 1)

Vanicky, Josef

Sachove listy, 1925

1K2k1b1/4PN1p/4n2P/3N4/8/5Q2/8/8

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd8
      • 2.exd8Q#
      • 2.exd8R#
  • Tries
    • 1.Sf6+?
      • 1...Kxf7
        • 2.e8Q#
      • 1...Kxe7!
    • 1.Se5?
      • 1...Bf7
        • 2.Qxf7#
      • 1...Sd4
        • 2.Qf8#
      • 1...Sc5
        • 2.Qf8#
      • 1...Sg5
        • 2.Qf8#
      • 1...Sc7
        • 2.Qf8#
      • 1...Sg7
        • 2.Qf8#
      • 1...Sd8
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#
        • 2.exf8Q#
        • 2.exf8R#
      • 1...Sf4!
  • Keys
    • 1.Qg4!
      • 1...Kd7
        • 2.Qa4#
      • 1...Kxf7
        • 2.Qh5#
      • 1...Bxf7
        • 2.Qa4#
      • 1...Sf4
        • 2.Sd6#
      • 1...Sd4
        • 2.Sd6#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sg5
        • 2.Sd6#
      • 1...Sc7
        • 2.Sd6#
      • 1...Sg7
        • 2.Sd6#
      • 1...Sd8
        • 2.Sd6#
      • 1...Sf8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::PXS(a)=Q
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XS(E)::P=Q
      • Refutation
        • K(c);P-FLIGHT,XP(D)
    • Try
      • S(E);
      • Vars
        • B(d);N_GUARD::QAB1(A),XB(d)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT::QAB(A)
      • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • B(d);SBLOCK,XS(E)::QAB(A)
      • S(a);::S(E)
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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).