MESON Chess Problem Database

Problem Display
PID: 15567 (Rb6/1N4Q1/1P2k3/4p3/4K3/8/8/8 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1985

Rb6/1N4Q1/1P2k3/4p3/4K3/8/8/8

#2

5 + 3

3310 2345 Chess Problems 1997
133 The Problemist Supplement 2011
15 British Chess Magazine 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Sd8#
    • 1...Ba7
      • 2.Re8#
    • 1...Bc7
      • 2.Re8#
  • Tries
    • 1.Ra5?
      • 1...Ba7
        • 2.Rxe5#
      • 1...Bd6
        • 2.Sd8#
      • 1...Bc7!
  • Keys
    • 1.Ra6!
      • 1...Bc7
        • 2.bxc7#
      • 1...Bd6
        • 2.Sd8#
      • 1...Ba7
        • 2.bxa7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::S(C)
    • B(c);OGATE::R(E)
  • Tries
    • Try
      • R(E);
      • Vars
        • B(c);N_GUARD::R1(E),XP(a)
        • B(c);SBLOCK::S(C)
      • Refutation
        • B(c);
  • Actual
    • R(E);
    • Vars
      • B(c);OGATE::R(E)+P(B),XB(c)
      • B(c);SBLOCK::S(C)
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).