MESON Chess Problem Database

Problem Display
PID: 3055 (4Rb2/4p1p1/6p1/p3knR1/pn1pNN2/B4K2/8/8 w - - 0 1)

Williams, Philip Hamilton

Western Daily Mercury, 1917

(First published on Fri May 4 1917)

4Rb2/4p1p1/6p1/p3knR1/pn1pNN2/B4K2/8/8

#2

6 + 10

2681 All Change Here! 1919
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Bd6#
    • 1...Sc2
      • 2.Bd6#
    • 1...Sd3
      • 2.Bd6#
    • 1...Sd5
      • 2.Bd6#
    • 1...Sa6
      • 2.Bd6#
    • 1...Sc6
      • 2.Bd6#
    • 1...d3
      • 2.Bb2#
    • 1...e6
      • 2.Rxe6#
  • Tries
    • 1.Bxb4?
      • threat
        • 2.Bd6#
      • 1...d3
        • 2.Bc3#
      • 1...e6
        • 2.Rxe6#
      • 1...axb4!
  • Keys
    • 1.Rd8!
      • 1...Sd3
        • 2.Rd5#
      • 1...Sa2
        • 2.Rd5#
      • 1...Sc2
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sa6
        • 2.Rd5#
      • 1...Sc6
        • 2.Rd5#
      • 1...d3
        • 2.Bb2#
      • 1...e6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::B(A)
    • P(c);OGATEB::B(A)
    • P(h);OGATE::R1(F),XP(h)
  • Tries
    • Try
      • B(A);XS(b)
      • Threat
        • B(A)
      • Vars
        • P(c);OGATEB::B(A)
        • P(h);OGATE::R1(F),XP(h)
      • Refutation
        • P(d);XB(A)
  • Actual
    • R(F);N_PINP(h)
    • Vars
      • S(b);N_GUARD::R1(F)
      • S(b);N_GUARD::R1(F),XS(b)
      • P(c);OGATEB::B(A)
      • P(h);SBLOCK::S(D),XP(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).