MESON Chess Problem Database

Problem Display
PID: 76985 (4K3/8/3pk3/8/3P3P/3Bp3/4P3/4Q3 w - - 0 1)

Davey, David Murray

The Tablet, 1948

(First published on Sat Apr 3 1948)

4K3/8/3pk3/8/3P3P/3Bp3/4P3/4Q3

#2

6 + 3

15239 Valois Notebooks 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qg3?
      • 1...Kf6
        • 2.Qg6#
      • 1...d5
        • 2.Qe5#
        • 2.Qg6#
      • 1...Kd5!
    • 1.Qb4?
      • 1...Kd5
        • 2.Qc4#
      • 1...d5
        • 2.Qe7#
        • 2.Qb6#
      • 1...Kf6!
    • 1.Qa5?
      • threat
        • 2.Qf5#
      • 1...d5
        • 2.Qb6#
        • 2.Qa6#
      • 1...Kf6!
    • 1.Qa1?
      • 1...Kf6
        • 2.d5#
      • 1...d5
        • 2.Qa6#
      • 1...Kd5!
    • 1.Qc1?
      • 1...Kd5
        • 2.Qc4#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qg1?
      • 1...Kf6
        • 2.Qg6#
      • 1...d5
        • 2.Qg6#
      • 1...Kd5!
  • Keys
    • 1.Qc3!
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf6
        • 2.d5#
      • 1...d5
        • 2.Qc6#

This anticipates 70095(2006)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAB(A)+P(D)
        • P(b);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
        • P(b);OGATEB::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);P-FLIGHT::QAB(A)+P(D)
      • P(b);OGATEB::QAR2(A)
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