MESON Chess Problem Database

Problem Display
PID: 76893 (8/3K3B/5k1P/8/2P3p1/3p2P1/3P3Q/8 w - - 0 1)

Davey, David Murray

The Tablet, 1948

(First published on Sat Jan 17 1948)

8/3K3B/5k1P/8/2P3p1/3p2P1/3P3Q/8

#2

7 + 3

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qh4#
    • 1...Kf7
      • 2.Qf2#
  • Tries
    • 1.Kd6?
      • 1...Kg5
        • 2.Qh4#
      • 1...Kf7!
    • 1.Qg1?
      • 1...Ke5
        • 2.Qa1#
      • 1...Kf7
        • 2.Qf2#
        • 2.Qf1#
      • 1...Kg5!
    • 1.Qf2+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kg5!
    • 1.Qh4+?
      • 1...Kf7
        • 2.Qe7#
      • 1...Ke5!
    • 1.c5?
      • 1...Kg5
        • 2.Qh4#
      • 1...Kf7
        • 2.Qf2#
      • 1...Ke5!
  • Keys
    • 1.Qh1!
      • 1...Ke5
        • 2.Qa1#
      • 1...Kg5
        • 2.Qh4#
      • 1...Kf7
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(B)
    • K(c);P-FLIGHT::QAR(B)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • K(c);P-FLIGHT::QAR(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::QAB(B)
      • K(c);S_FLIGHT::QAB1(B)
      • K(c);P-FLIGHT::QAR(B)
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