MESON Chess Problem Database

Problem Display
PID: 85793 (BB5Q/3P3K/4k1P1/8/8/8/8/8 w - - 0 1)

Speckmann, Werner

Rochade, 1983

BB5Q/3P3K/4k1P1/8/8/8/8/8

#2

6 + 1

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8+?
      • 1...Kf6
        • 2.Qe5#
      • 1...Kf5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.d8Q#
        • 2.d8B#
      • 1...Kf5
        • 2.d8Q#
        • 2.d8B#
      • 1...Kf6
        • 2.d8Q#
        • 2.d8B#
      • 1...Ke7
        • 2.d8Q#

Anticipated by 232342(1973)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • P=Q
    • Vars
      • K(a);S_FLIGHT::P=Q
      • K(a);P-FLIGHT::P=Q
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