MESON Chess Problem Database

Problem Display
PID: 222719 (6nb/3Qp3/4N1k1/6B1/2N4P/5K2/6B1/8 w - - 0 1)

Keeney, Ebenezer Wood

Charleston Sunday News, 1883

6nb/3Qp3/4N1k1/6B1/2N4P/5K2/6B1/8

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Sf4#
      • 2.Qe8#
    • 1...Kh7
      • 2.Qd3#
  • Tries
    • 1.Qe8+?
      • 1...Kf5
        • 2.Bh3#
      • 1...Kh7!
    • 1.Qd3+?
      • 1...Kh5
        • 2.Sf4#
      • 1...Kf7!
  • Keys
    • 1.h5+!
      • 1...Kf5
        • 2.Bh3#
      • 1...Kxh5
        • 2.Qe8#
      • 1...Kf7
        • 2.Sd6#
      • 1...Kh7
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(b),S_FLIGHT::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);S_FLIGHT::S(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);CHECK
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT,XP(D)::QAB(G)
      • K(a);P_SPINP(b),S_FLIGHT::S(C)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(G)
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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).