MESON Chess Problem Database

Problem Display
PID: 18285 (7n/3B1n2/3p2p1/3P3k/6N1/6KN/8/1Q6 w - - 0 1)

Harley, Brian

Time & Tide, 1954

(First published on Sat Jan 2 1954)

7n/3B1n2/3p2p1/3P3k/6N1/6KN/8/1Q6

#2

6 + 5

15290 Harley Scrapbook 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Sf4#
    • 1...Sh6
      • 2.Sf6#
  • Tries
    • 1.Qf5+?
      • 1...Sg5
        • 2.Sf4#
        • 2.Qxg5#
      • 1...g5
        • 2.Sf4#
      • 1...gxf5!
    • 1.Qc1?
      • threat
        • 2.Sf6#
      • 1...Sg5
        • 2.Sf4#
        • 2.Qxg5#
      • 1...g5!
  • Keys
    • 1.Be8!
      • 1...Se5
        • 2.Qf5#
      • 1...Sg5
        • 2.Sf4#
      • 1...Sh6
        • 2.Sf6#
      • 1...Sd8
        • 2.Qf5#
      • 1...g5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::S(C)
    • S(d);SBLOCK::S(D)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);P_SPINP(c)::S(C)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Refutation
        • P(c);
  • Actual
    • B(F);
    • Vars
      • S(d);N_GUARD,P_SPINP(c)::QAR2(A)
      • S(d);P_SPINP(c),SBLOCK::S(C)
      • S(d);P_SPINP(c),SBLOCK::S(D)
      • P(c);OGATE,P_SPINS(d)::QAR2(A)
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