MESON Chess Problem Database

Problem Display
PID: 153615 (2BR1RbB/1r1n1Q2/5n1r/2p3p1/4k3/3p1pPP/K2PP3/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1948

2BR1RbB/1r1n1Q2/5n1r/2p3p1/4k3/3p1pPP/K2PP3/8

#2

10 + 10

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.exf3#
    • 1...Sd5
      • 2.Qxf3#
      • 2.Qf5#
      • 2.exf3#
    • 1...Sh5
      • 2.exf3#
    • 1...Sh7
      • 2.exf3#
    • 1...Se8
      • 2.exf3#
  • Tries
    • 1.Rde8+?
      • 1...Kd4
        • 2.e3#
      • 1...Kf5
        • 2.e4#
      • 1...Sxe8
        • 2.exf3#
      • 1...Se5!
    • 1.Qe6+?
      • 1...Kd4
        • 2.e3#
      • 1...Se5
        • 2.exd3#
      • 1...Bxe6+!
  • Keys
    • 1.Rfe8+!
      • 1...Kd4
        • 2.e3#
      • 1...Kf5
        • 2.e4#
      • 1...Sxe8
        • 2.exf3#
      • 1...Se5
        • 2.exd3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(f);::P(C),XP(b)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(f)::P(C)
        • K(c);OGATE,P_SPINS(f),S_FLIGHT::P(C)
        • S(f);XR(H)::P(C),XP(b)
      • Refutation
        • S(i);P_SPINS(i)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(f)::P(C)
        • S(i);P_SPINS(i)::P(C),XP(a)
      • Refutation
        • B(j);CHECK,XQ(F)
  • Actual
    • R(I);CHECK
    • Vars
      • K(c);P-FLIGHT,P_SPINS(f)::P(C)
      • K(c);OGATE,P_SPINS(f),S_FLIGHT::P(C)
      • S(f);XR(I)::P(C),XP(b)
      • S(i);P_SPINS(i)::P(C),XP(a)
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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).