MESON Chess Problem Database

Problem Display
PID: 287349 (n6k/7b/5Kp1/5P2/8/8/6Q1/8 w - - 0 1)

Kovalenko, V?

Uralski Problemist, 2005

n6k/7b/5Kp1/5P2/8/8/6Q1/8

#2

3 + 4

5454 Near Snap 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Kg8
      • 2.Qxa8#
    • 1...gxf5
      • 2.Qg7#
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qg7#
      • 1...Kg8
        • 2.Qxa8#
        • 2.Qc8#
        • 2.Qg7#
        • 2.Qb8#
      • 1...Sc7!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Kf7#
      • 1...Kg8
        • 2.Qb8#
      • 1...Bg8
        • 2.Kxg6#

Anticipated by 77497(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);P-FLIGHT,P_SPINP(a),S_CUTB(b)::QAR(A),XS(c)
    • P(a);OGATE,XP(B)::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+K(C)
    • Vars
      • K(d);P-FLIGHT,S_CUTB(b)::QAR(A)
      • B(b);SBLOCK::QAB(A)+K(C),XP(a)
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