MESON Chess Problem Database

Problem Display
PID: 207000 (4B2K/8/Q7/6k1/3Bp3/5pp1/8/8 w - - 0 1)

Moore, Charles C

Daily Alta California, 1859

4B2K/8/Q7/6k1/3Bp3/5pp1/8/8

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6+?
      • 1...Kh4
        • 2.Qh5#
      • 1...Kf4!
  • Keys
    • 1.Qh6+!
      • 1...Kg4
        • 2.Bd7#
      • 1...Kf5
        • 2.Bd7#
      • 1...Kxh6
        • 2.Be3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);CHECK
    • Vars
      • K(d);P-FLIGHT::B(C)
      • K(d);S_FLIGHT,XQ(B)::B(A)
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