MESON Chess Problem Database

Problem Display
PID: 77019 (5K2/4p3/4pk2/3P1p1P/5Q2/8/8/8 w - - 0 1)

Davey, David Murray

The Tablet, 1948

(First published on Sat Jul 3 1948)

5K2/4p3/4pk2/3P1p1P/5Q2/8/8/8

#2

4 + 4

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qh6#
      • 2.Qh4#
  • Tries
    • 1.Kg8?
      • 1...e5
        • 2.Qh6#
        • 2.Qh4#
      • 1...exd5!
    • 1.Qg3?
      • threat
        • 2.Qg7#
      • 1...f4
        • 2.Qxf4#
      • 1...exd5!
    • 1.Qc7?
      • 1...exd5
        • 2.Qxe7#
      • 1...f4
        • 2.Qxf4#
      • 1...e5
        • 2.Qxe7#
      • 1...Kg5!
    • 1.Qd4+?
      • 1...e5
        • 2.Qh4#
      • 1...Kg5!
    • 1.d6?
      • 1...e5
        • 2.Qh6#
      • 1...exd6!
  • Keys
    • 1.Qe3!
      • 1...exd5
        • 2.Qxe7#
      • 1...f4
        • 2.Qxf4#
      • 1...e5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • P(b);XP(B)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB1(A)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(b);XP(B)
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(b);XP(B)::QAB1(A),XP(d)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);::QAB1(A),XP(d)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(B);
      • Vars
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • P(d);XP(B)
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • P(b);OGATE,XP(B)::QAB1(A),XP(d)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(b);SBLOCK::QAR2(A)
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