MESON Chess Problem Database

Problem Display
PID: 222447 (8/2B4Q/8/3P1Nkn/6p1/6p1/3K2P1/8 w - - 0 1)

Cotton, William C

Glasgow Herald, 1883

8/2B4Q/8/3P1Nkn/6p1/6p1/3K2P1/8

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Bd8#
  • Tries
    • 1.Ke3?
      • 1...Sf6
        • 2.Bf4#
      • 1...Sf4
        • 2.Bd8#
      • 1...Sg7
        • 2.Bd8#
      • 1...Kf6!
  • Keys
    • 1.Sd6!
      • 1...Kf4
        • 2.Se4#
        • 2.Sf7#
        • 2.Qf5#
      • 1...Kh4
        • 2.Bd8#
      • 1...Kf6
        • 2.Se4#
      • 1...Sf6
        • 2.Sf7#
      • 1...Sf4
        • 2.Se4#
        • 2.Bd8#
      • 1...Sg7
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(d);N_GUARD,SBLOCK::B(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(d);N_GUARD,SBLOCK::B(E)
        • S(d);N_GUARD::B(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(c);P_SPINS(d),S_FLIGHT::B(E)
      • K(c);S_FLIGHT::S(D)
      • S(d);SBLOCK::S(D)
      • S(d);::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).