MESON Chess Problem Database

Problem Display
PID: 44109 (1QB5/4k3/1Pb4B/8/2P2K2/8/8/8 w - - 0 1)

Hanshew, John K

Source?, 0000

1QB5/4k3/1Pb4B/8/2P2K2/8/8/8

#2

6 + 2

4803 Chess Problems by John K Hanshew 1874
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qf8#
      • 1...Kf6
        • 2.Qf8#
      • 1...Kf7
        • 2.Qf8#
      • 1...Be8!
    • 1.Qe5+?
      • 1...Kf7
        • 2.Qe6#
      • 1...Kd8!
  • Keys
    • 1.Qd6+!
      • 1...Kxd6
        • 2.Bf8#
      • 1...Kf7
        • 2.Qe6#
      • 1...Ke8
        • 2.Qf8#

This anticipates 10574(1965)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);CHECK
    • Vars
      • K(b);S_FLIGHT,XQ(E)::B(D)
      • K(b);P-FLIGHT::QAB1(E)
      • K(b);OGATE,P-FLIGHT::QAR1(E)
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