MESON Chess Problem Database

Problem Display
PID: 145008 (k7/1p6/B1P5/R1N5/2K5/8/8/8 w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1916

k7/1p6/B1P5/R1N5/2K5/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.c7?
      • threat
        • 2.Bb5#
        • 2.Bxb7#
      • 1...b5+
        • 2.Bxb5#
      • 1...bxa6
        • 2.Rxa6#
      • 1...b6
        • 2.Bb7#
      • 1...Ka7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Bb5#
        • 2.Bxb7#
      • 1...b5+
        • 2.Bxb5#
      • 1...Ka7
        • 2.Bb5#
        • 2.Bxb7#
      • 1...bxa6
        • 2.Rxa6#
      • 1...bxc6
        • 2.Bc8#
      • 1...b6
        • 2.Bb7#

This is after

After J. F. Keeble.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK::R(B)+B(D),XP(a)
        • P(a);OGATE,P_SPINP(a),XB(D)::R(B),XP(a)
        • P(a);::R(B)+B(D),DCHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK::R(B)+B(D),XP(a)
      • P(a);OGATE,P_SPINP(a),XB(D)::R(B),XP(a)
      • P(a);OGATE,XP(E)::R(B)+B(D)
      • P(a);::R(B)+B(D),DCHECK
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).