MESON Chess Problem Database

Problem Display
PID: 227783 (Q7/2k5/1N6/8/1BK5/8/8/8 w - - 0 1)

Schiffert, Gyorgy

Schonberger, Tibor

Magyar Sakkvilag, 1926

Q7/2k5/1N6/8/1BK5/8/8/8

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb6
      • 2.Ba5#
  • Tries
    • 1.Be1?
      • 1...Kxb6
        • 2.Ba5#
      • 1...Kd6!
    • 1.Bd2?
      • 1...Kxb6
        • 2.Ba5#
      • 1...Kd6!
    • 1.Bc3?
      • 1...Kxb6
        • 2.Ba5#
      • 1...Kd6!
    • 1.Qb7+?
      • 1...Kd8
        • 2.Qc8#
        • 2.Qd7#
        • 2.Qe7#
        • 2.Qb8#
      • 1...Kxb7!
    • 1.Qa6?
      • 1...Kb8
        • 2.Bd6#
      • 1...Kd8
        • 2.Qc8#
      • 1...Kc6!
    • 1.Qa7+?
      • 1...Kd8
        • 2.Qb8#
        • 2.Qd7#
        • 2.Qe7#
      • 1...Kc6!
  • Keys
    • 1.Be7!
      • 1...Kxb6
        • 2.Bd8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XS(C)::B(A)
  • Tries
    • Try
      • B(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT,XS(C)::B(A)
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