MESON Chess Problem Database

Problem Display
PID: 259024 (6B1/4p3/2PPQ3/3pPp1K/3PqP2/3Pp1Pk/4pPpp/8 w - f5 0 1)

Dawson, Thomas Rayner

Western Morning News, 1922

(First published on Sat Dec 23 1922)

6B1/4p3/2PPQ3/3pPp1K/3PqP2/3Pp1Pk/4pPpp/8

#2

11 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxf5#
  • Keys
    • 1.exf5 ep+!
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Qxe6
        • 2.Bxe6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_GUARD,XP(D)::QAB(J),XP(h)
  • Actual
    • P(F);CHECK,EP,XP(h)
    • Vars
      • Q(f);CHECK,N_GUARD,P_SPINQ(f)::QAB(J),XQ(f)
      • Q(f);OGATE,XQ(J)::B(K),XQ(f)
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