MESON Chess Problem Database

Problem Display
PID: 234896 (6b1/4Q3/5Pk1/8/8/8/B6K/2B5 w - - 0 1)

Haring, Jacobus

Problemas, 1958

6b1/4Q3/5Pk1/8/8/8/B6K/2B5

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qg7+?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kf5!
  • Keys
    • 1.f7!
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kg7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Kh7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Bxf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);P-FLIGHT::PXB(b)=Q
      • K(a);S_FLIGHT::PXB(b)=Q
      • B(b);OGATE,XP(D)::QAB1(E),XB(b)
      • B(b);SBLOCK::QAR1(E)
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