MESON Chess Problem Database

Problem Display
PID: 153080 (8/3PB3/1N3R2/4k1p1/5nP1/5PQ1/2N1P3/2K5 w - - 0 1)

Dawson, Thomas Rayner

South African Chess Magazine, 1944

8/3PB3/1N3R2/4k1p1/5nP1/5PQ1/2N1P3/2K5

#2

10 + 3

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sxe2+
        • 2.Qxe2#
      • 1...Sg2
        • 2.Qd4#
        • 2.Qc5#
      • 1...Sd5
        • 2.Sc4#
        • 2.Qd4#
      • 1...Se6
        • 2.Rf5#
        • 2.Qe3#
      • 1...Sd3+!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qc3#
      • 1...Sxe2+
        • 2.Qxe2#
      • 1...Sd3+
        • 2.exd3#
      • 1...Sd5
        • 2.Sc4#
      • 1...Se6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);N_PINS(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,OGATE,XP(C)::QAR(E),XS(a)
      • Refutation
        • S(a);CHECK
  • Actual
    • Q(E);N_PINS(a)
    • Threat
      • QAB(E)
    • Vars
      • S(a);CHECK,OGATE,P_SPINS(a),XP(C)::QAR(E),XS(a)
      • S(a);CHECK,OGATE::QAR(E)+P(C),XS(a)
      • S(a);SBLOCK::S(G)
      • S(a);SBLOCK::R1(H)
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).