MESON Chess Problem Database

Problem Display
PID: 80724 (8/8/8/k7/2K5/8/8/2Q5 w - - 0 1)

Anonymous

Sissa, 1857

8/8/8/k7/2K5/8/8/2Q5

#2

2 + 1

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qa1#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qa1#
        • 2.Qa2#
        • 2.Qb4#
      • 1...Ka6!
    • 1.Qe3?
      • threat
        • 2.Qa7#
      • 1...Ka4
        • 2.Qa7#
      • 1...Ka6!
    • 1.Qb1?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qa2#
        • 2.Qa1#
        • 2.Qb4#
      • 1...Ka6!
    • 1.Qg1?
      • threat
        • 2.Qa7#
      • 1...Ka4
        • 2.Qa7#
        • 2.Qa1#
      • 1...Ka6!
  • Keys
    • 1.Qh6!
      • 1...Ka4
        • 2.Qa6#

This anticipates 231092(1927)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
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