MESON Chess Problem Database

Problem Display
PID: 77079 (8/4Q2K/8/3pp3/5k1p/7P/5P2/5B2 w - - 0 1)

Davey, David Murray

The Tablet, 1948

(First published on Sat Oct 2 1948)

8/4Q2K/8/3pp3/5k1p/7P/5P2/5B2

#2

5 + 4

5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qf6#
  • Tries
    • 1.Qg5+?
      • 1...Kf3
        • 2.Qe3#
        • 2.Qf5#
      • 1...Ke4
        • 2.Qg4#
      • 1...Kxg5!
    • 1.Qxe5+?
      • 1...Kf3
        • 2.Qe3#
        • 2.Qf5#
      • 1...Kxe5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qf5#
      • 1...Ke4
        • 2.Qg4#
      • 1...Kg5
        • 2.Qxe5#
      • 1...e4
        • 2.Qf6#

Anticipated by 49326(1893), 17142(1903)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK,XP(d)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • K(a);P-FLIGHT::QAR2(D)
      • K(a);P-FLIGHT,P_SPINP(d)::QAR2(D)
      • K(a);S_FLIGHT::QAR2(D),XP(d)
      • P(d);SBLOCK::QAR2(D)
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