MESON Chess Problem Database

Problem Display
PID: 262367 (1Q6/3N4/B3k2K/5N2/8/8/5P2/8 w - - 0 1)

Balo, Tibor

Europe Echecs, 1989

1Q6/3N4/B3k2K/5N2/8/8/5P2/8

#2

6 + 1

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd7
      • 2.Qc8#
    • 1...Kf7
      • 2.Bc4#
  • Tries
    • 1.Kg5?
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kd5!
    • 1.Kh5?
      • 1...Kxf5
        • 2.Qe5#
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kd5!
    • 1.Kg6?
      • threat
        • 2.Qd6#
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kd5!
    • 1.Bd3?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxd7!
    • 1.Bb5?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxf5!
    • 1.Bb7?
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Bd5#
      • 1...Kxf5!
    • 1.Qe5+?
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxd7!
    • 1.Qd6+?
      • 1...Kf7
        • 2.Qg6#
      • 1...Kxf5!
    • 1.Qa8?
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxf5!
    • 1.Qc8?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf7
        • 2.Bc4#
      • 1...Kxf5!
    • 1.Qf8?
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kd5!
    • 1.Qg8+?
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kxf5!
  • Keys
    • 1.f3!
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxf5
        • 2.Qe5#
      • 1...Kxd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
    • K(a);N_GUARD,S_FLIGHT::B(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(B)::QAR1(F)
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR1(F)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • B(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(F);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • P(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(F)
      • K(a);N_GUARD,S_FLIGHT,XS(B)::QAR1(F)
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • K(a);N_GUARD,S_FLIGHT::B(C)
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