MESON Chess Problem Database

Problem Display
PID: 258620 (Q7/4BN2/8/1P1Np3/4k3/2P5/2P5/7K w - - 0 1)

Williams, Albert H

English Mechanic and World of Science, 1901

(First published on Fri Jan 25 1901)

Q7/4BN2/8/1P1Np3/4k3/2P5/2P5/7K

#2

8 + 2

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qc8?
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kf3!
  • Keys
    • 1.Qg8!
      • 1...Kf3
        • 2.Qg2#
      • 1...Kxd5
        • 2.Sg5#
      • 1...Kf5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(H)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(H)
      • K(a);N_GUARD,S_FLIGHT,XS(E)::QAB(H)+S(G)
      • K(a);N_GUARD,S_FLIGHT::S(G)
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