MESON Chess Problem Database

Problem Display
PID: 77497 (n6k/7b/5Kp1/6P1/8/8/6Q1/8 w - - 0 1)

Cyrulik, Stepan Pavlovich

Problemist Pribuzhya, 1992

n6k/7b/5Kp1/6P1/8/8/6Q1/8

#2

3 + 4

5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kg8
      • 2.Qxa8#
  • 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 38393(1877), 109820(1906), 76886(1947), 108705(1980)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::QAR(A),XS(c)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+K(C)
    • Vars
      • K(d);P-FLIGHT::QAR(A)
      • B(b);SBLOCK::QAB(A)+K(C),XP(a)
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