MESON Chess Problem Database

Problem Display
PID: 249054 (4K3/PkP5/8/1PP5/2P5/8/8/8 w - - 0 1)

de Blasio, Francis JC

The Problemist, 1954

4K3/PkP5/8/1PP5/2P5/8/8/8

#2

6 + 1

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.a8Q+?
      • 1...Kxc7
        • 2.b6#
      • 1...Kxa8!
    • 1.c8Q+?
      • 1...Kxa7
        • 2.b6#
      • 1...Kxc8!
  • Keys
    • 1.b6!
      • 1...Ka6
        • 2.a8Q#
      • 1...Kc6
        • 2.c8Q#
      • 1...Ka8
        • 2.c8Q#
      • 1...Kc8
        • 2.a8Q#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(E)::P(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • P(E);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(D)::P(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT::P=Q
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