MESON Chess Problem Database

Problem Display
PID: 278197 (8/5Pk1/2Q5/8/5N1K/8/8/8 w - - 0 1)

Bajtay, Jozsef

Stella Polaris, 1972

8/5Pk1/2Q5/8/5N1K/8/8/8

#2

4 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kh8
      • 2.Qh6#
  • Tries
    • 1.Qb7?
      • 1...Kh6
        • 2.f8Q#
        • 2.f8B#
      • 1...Kh7
        • 2.f8Q#
      • 1...Kf8
        • 2.Se6#
      • 1...Kh8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kf6!
    • 1.Qd7?
      • 1...Kh6
        • 2.f8Q#
        • 2.f8B#
      • 1...Kh7
        • 2.f8Q#
      • 1...Kf8
        • 2.Se6#
      • 1...Kh8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kf6!
    • 1.Qe8?
      • 1...Kf6
        • 2.f8Q#
      • 1...Kh6
        • 2.Qh8#
      • 1...Kh7!
    • 1.Qg6+?
      • 1...Kh8
        • 2.Qh6#
        • 2.Qg8#
        • 2.f8Q#
        • 2.f8R#
      • 1...Kf8!
    • 1.f8Q+?
      • 1...Kh7
        • 2.Qe4#
        • 2.Qb7#
        • 2.Qd7#
        • 2.Qc2#
        • 2.Qg6#
        • 2.Qch6#
        • 2.Qc7#
      • 1...Kxf8!
    • 1.f8R?
      • 1...Kh7
        • 2.Qg6#
      • 1...Kxf8!
  • Keys
    • 1.Qc7!
      • 1...Kf6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kh6
        • 2.f8Q#
        • 2.f8B#
      • 1...Kh7
        • 2.f8Q#
      • 1...Kf8
        • 2.Se6#
      • 1...Kh8
        • 2.f8Q#
        • 2.f8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAR2(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=Q
        • K(a);N_GUARD,P-FLIGHT::P=Q
        • K(a);N_GUARD,S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=Q
        • K(a);N_GUARD,P-FLIGHT::P=Q
        • K(a);N_GUARD,S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::P=Q
        • K(a);N_GUARD,S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • P(D);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • Q(C);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::P=Q
      • K(a);N_GUARD,P-FLIGHT::P=Q
      • K(a);N_GUARD,S_FLIGHT::S(A)
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