MESON Chess Problem Database

Problem Display
PID: 145059 (K7/4bN1B/2P5/3kp3/4N1p1/p7/2r1RB2/1Q1r4 w - - 0 1)

Knox

Brighton Society, 1895

(First published on Sat May 18 1895)

K7/4bN1B/2P5/3kp3/4N1p1/p7/2r1RB2/1Q1r4

#2

8 + 7

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qb7#
  • Tries
    • 1.Qb3+?
      • 1...Kxc6
        • 2.Qb7#
      • 1...Rc4!
  • Keys
    • 1.Bg8!
      • threat
        • 2.Sd8#
      • 1...Kc4
        • 2.Sxe5#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Sfd6#
        • 2.Sh6#
      • 1...Rxc6
        • 2.Sfd6#
      • 1...Bd8
        • 2.Sxd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • B(G);
    • Threat
      • B(G)+S(F)
    • Vars
      • K(e);S_FLIGHT::B(G)+S(F),DCHECK,XP(f)
      • K(e);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • R(b);SBLOCK,XP(E)::B(G)+S(F)
      • B(g);::B(G)+S(F),XB(g)
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).