MESON Chess Problem Database

Problem Display
PID: 79524 (4Q3/8/4P3/4k3/4N3/4R3/4B3/4K3 w - - 0 1)

Caburis, L

Junais komunars, 1940

4Q3/8/4P3/4k3/4N3/4R3/4B3/4K3

#2

6 + 1

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qg5#
      • 1...Kxe6!
    • 1.Qh5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qg5#
      • 1...Kxe6!
    • 1.Qd8?
      • 1...Kf4
        • 2.Qg5#
      • 1...Kf5
        • 2.Qf6#
      • 1...Kxe6!
    • 1.Qf8?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxe6!
  • Keys
    • 1.Qe7!
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4
        • 2.Qg5#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf5
        • 2.Qf6#

This anticipates 176172(1962)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(F)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);P-FLIGHT::QAR1(F)
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