MESON Chess Problem Database

Problem Display
PID: 262017 (8/5p1Q/6nP/8/8/8/5K1p/7k w - - 0 1)

Lipton, Michael

The Problemist, 1953

8/5p1Q/6nP/8/8/8/5K1p/7k

#2

3 + 4

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qb1#
    • 1...Sh4
      • 2.Qb1#
    • 1...Se5
      • 2.Qb1#
    • 1...Se7
      • 2.Qb1#
      • 2.Qe4#
    • 1...Sf8
      • 2.Qb1#
      • 2.Qe4#
    • 1...Sh8
      • 2.Qb1#
      • 2.Qe4#
    • 1...f5
      • 2.Qb7#
    • 1...f6
      • 2.Qb7#
  • Tries
    • 1.Qxg6?
      • threat
        • 2.Qb1#
        • 2.Qe4#
        • 2.Qg2#
        • 2.Qc6#
      • 1...f5
        • 2.Qg2#
        • 2.Qc6#
      • 1...f6
        • 2.Qb1#
        • 2.Qe4#
        • 2.Qg2#
      • 1...fxg6!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qa1#
      • 1...Se5
        • 2.Qg2#
      • 1...f6
        • 2.Qb7#

There are these versions: 262018

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • S(c);OGATE::QAR(C)
    • P(d);OGATE::QAB(C)
  • Tries
    • Try
      • Q(C);XS(c)
      • Threat
        • DUALS(4)
      • Refutation
        • P(d);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • S(c);OGATE::QAB1(C)
      • P(d);OGATE::QAB(C)
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