MESON Chess Problem Database

Problem Display
PID: 267815 (4Q3/4p3/4k3/7K/1P1P4/3P4/8/8 w - - 0 1)

Muzyka, Arkady

Parkhomenko, Nikolai A

diagrammes, 1976

4Q3/4p3/4k3/7K/1P1P4/3P4/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qd7#
    • 1...Kf5
      • 2.Qf7#
    • 1...Kf6
      • 2.Qg6#
  • Tries
    • 1.Kg5?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kd6!
    • 1.Kg6?
      • threat
        • 2.Qc6#
      • 1...Kd5
        • 2.Qd7#
      • 1...Kd6!
    • 1.Qxe7+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kf5
        • 2.Qe5#
        • 2.Qf7#
      • 1...Kxe7!
  • Keys
    • 1.b5!
      • 1...Kd5
        • 2.Qd7#
      • 1...Kf5
        • 2.Qf7#
      • 1...Kd6
        • 2.Qc6#
      • 1...Kf6
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAR2(E)
    • K(a);N_GUARD,N_SPINP(b),P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAR2(E)
      • Vars
        • K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
  • Actual
    • P(B);
    • Vars
      • K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAR2(E)
      • K(a);N_GUARD,N_SPINP(b),P-FLIGHT::QAR1(E)
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