MESON Chess Problem Database

Problem Display
PID: 265551 (8/3kP3/K5P1/8/1B6/Q7/8/8 w - - 0 1)

Koshel, Mikhail Igorevich

Kudesnik, 2022

8/3kP3/K5P1/8/1B6/Q7/8/8

#2

5 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qa4#
  • Tries
    • 1.Kb6?
      • 1...Kc8
        • 2.e8Q#
      • 1...Ke8
        • 2.Qa4#
      • 1...Ke6!
    • 1.Kb7?
      • 1...Ke8
        • 2.Qa4#
      • 1...Ke6!
    • 1.Qc1?
      • 1...Ke8
        • 2.Qc6#
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qc3?
      • 1...Ke8
        • 2.Qc6#
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qa5?
      • 1...Kc6
        • 2.e8Q#
        • 2.e8B#
      • 1...Kc8
        • 2.Qd8#
        • 2.e8Q#
      • 1...Ke8
        • 2.Qd8#
        • 2.Qa4#
        • 2.Qb5#
      • 1...Ke6!
    • 1.e8Q+?
      • 1...Kc7
        • 2.Ba5#
        • 2.Bd6#
        • 2.Qc1#
        • 2.Qc3#
        • 2.Qg3#
        • 2.Qa5#
      • 1...Kxe8!
  • Keys
    • 1.Qf3!
      • 1...Ke6
        • 2.e8Q#
      • 1...Kc7
        • 2.Qb7#
      • 1...Kc8
        • 2.Qb7#
      • 1...Ke8
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=Q
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • Q(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::P=Q
      • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • K(a);N_GUARD,S_FLIGHT::QAB(A)
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