MESON Chess Problem Database

Problem Display
PID: 95058 (6b1/3nP2k/6p1/4B1Kn/8/5Q2/8/8 w - - 0 1)

Vidorni, P

Cherkasskaya Pravda, 1970

6b1/3nP2k/6p1/4B1Kn/8/5Q2/8/8

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf8
      • 2.exf8S#
  • Tries
    • 1.Qf7+?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Bxf7!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qh6#
      • 1...Sxf8
        • 2.exf8S#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Ba2
        • 2.Qh8#
      • 1...Bb3
        • 2.Qh8#
      • 1...Bc4
        • 2.Qh8#
      • 1...Bd5
        • 2.Qh8#
      • 1...Be6
        • 2.Qh8#
      • 1...Bf7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::PXS(c)=S
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
      • Refutation
        • B(e);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • S(c);OGATE,XQ(A)::PXS(c)=S
      • S(a);N_GUARD::QAR1(A),XS(a)
      • B(e);OGATE::QAR1(A)
HTML5 logo

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).