MESON Chess Problem Database

Problem Display
PID: 215292 (7K/2B1k3/3NP3/8/2Q5/8/8/8 w - - 0 1)

Peretiaka, Evgeny V

Zadachi i Etyudi, 1999

7K/2B1k3/3NP3/8/2Q5/8/8/8

#2

5 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • 1...Kf8
        • 2.e7#
      • 1...Kf6!
    • 1.Qc3?
      • 1...Kf8
        • 2.Qf6#
        • 2.Qg7#
      • 1...Kxe6!
    • 1.Qd4?
      • 1...Kf8
        • 2.Qf6#
        • 2.Qg7#
      • 1...Kxe6!
    • 1.Qg4?
      • 1...Kf8
        • 2.Qg7#
      • 1...Kf6!
    • 1.Qh4+?
      • 1...Kf8
        • 2.Qf6#
        • 2.Qd8#
        • 2.e7#
      • 1...Kxe6!
  • Keys
    • 1.Qe4!
      • 1...Kf6
        • 2.Bd8#
      • 1...Kf8
        • 2.e7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);OGATE,S_FLIGHT::P(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);OGATE,S_FLIGHT::P(C)
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