MESON Chess Problem Database

Problem Display
PID: 7486 (8/5PPq/5p1k/8/6QK/8/8/8 w - - 0 1)

Chornous, Volodimir Mikhailovich

Melnichenko, Viktor Oleksandrovich

1st Prize, Problemist Pribuzhya, 1990

8/5PPq/5p1k/8/6QK/8/8/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002
145 StrateGems 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg7
      • 2.Qh5#
    • 1...Qh8
      • 2.gxh8Q#
      • 2.gxh8R#
    • 1...f5
      • 2.Qg5#
  • Tries
    • 1.f8Q?
      • threat
        • 2.Qh5#
        • 2.g8S#
      • 1...Qxg7
        • 2.Qh5#
        • 2.Qfxg7#
        • 2.Qgxg7#
      • 1...Qb1
        • 2.Qh5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Qc2
        • 2.Qh5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Qd3
        • 2.Qh5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Qg8
        • 2.Qh5#
      • 1...Qh8
        • 2.Qh5#
        • 2.Qxh8#
        • 2.gxh8Q#
        • 2.gxh8R#
      • 1...Qg6!
    • 1.f8B?
      • threat
        • 2.Qh5#
        • 2.g8S#
      • 1...Qxg7
        • 2.Qh5#
        • 2.Qxg7#
      • 1...Qb1
        • 2.Qh5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Qc2
        • 2.Qh5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Qd3
        • 2.Qh5#
        • 2.g8Q#
        • 2.g8B#
      • 1...Qg8
        • 2.Qh5#
      • 1...Qh8
        • 2.Qh5#
        • 2.gxh8Q#
        • 2.gxh8R#
      • 1...Qg6!
    • 1.g8Q?
      • threat
        • 2.Qh5#
        • 2.Qf4#
      • 1...Qxf7
        • 2.Qf4#
      • 1...Qe4
        • 2.Qg7#
        • 2.f8Q#
        • 2.f8B#
      • 1...Qf5
        • 2.Q4g7#
        • 2.Q8g7#
        • 2.f8Q#
        • 2.f8B#
      • 1...Qg6
        • 2.Q4xg6#
        • 2.Q8xg6#
      • 1...Qg7
        • 2.Qh5#
        • 2.Q4xg7#
        • 2.Q8xg7#
      • 1...Qxg8!
  • Keys
    • 1.f8S!
      • 1...Qxg7
        • 2.Qh5#
      • 1...Qg6
        • 2.Qxg6#
      • 1...Qb1
        • 2.g8S#
      • 1...Qc2
        • 2.g8S#
      • 1...Qd3
        • 2.g8S#
      • 1...Qe4
        • 2.g8S#
      • 1...Qf5
        • 2.g8S#
      • 1...Qg8
        • 2.Qg6#
      • 1...Qh8
        • 2.Qg6#
        • 2.gxh8Q#
        • 2.gxh8R#
      • 1...f5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(c);SBLOCK,XP(D)::QAR1(A)
    • Q(c);OGATE::PXQ(c)=Q
    • P(a);N_GUARD::QAB1(A)
  • Tries
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::QAR1(A)
      • Refutation
        • Q(c);
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::QAR1(A)
      • Refutation
        • Q(c);
    • Try
      • P(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XP(C)::QAB(A)
      • Refutation
        • Q(c);XQ(D)
  • Actual
    • P(C);
    • Vars
      • Q(c);SBLOCK,XP(D)::QAR1(A)
      • Q(c);N_GUARD::QAR1(A),XQ(c)
      • Q(c);N_GUARD::P=S
      • Q(c);N_GUARD,P_PINQ(A)::P=S
      • Q(c);N_GUARD::QAR1(A)
      • P(a);N_GUARD::QAB1(A)
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