MESON Chess Problem Database

Problem Display
PID: 57310 (8/8/8/2Bbk2P/Q5P1/8/7K/8 w - - 0 1)

Martindale, Frank W

Source?, 1872

8/8/8/2Bbk2P/Q5P1/8/7K/8

#2

5 + 2

5454 Near Snap 2007
3713 Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qd4#
  • Tries
    • 1.Qf4+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Kxf4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Qf5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Be4
        • 2.Qd6#
      • 1...Be6
        • 2.Qd4#

This anticipates 212972(1882), 248100(1899), 5103(1899), 64275(1926), 142031(1926)

This is a version of 207506

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAB1(B)
      • B(a);SBLOCK::QAB1(B)
      • B(a);OGATE,SBLOCK::QAB1(B)
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