MESON Chess Problem Database

Problem Display
PID: 5103 (7K/8/Q7/2Bbk3/6P1/7P/8/8 w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1899

7K/8/Q7/2Bbk3/6P1/7P/8/8

#2

5 + 2

3360 Simple Two-move Themes 1924
5501 Chess Cameos 1936
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qd6#
  • Tries
    • 1.Qf6+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kxf6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qe3#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kf6
        • 2.Qf5#
      • 1...Be4
        • 2.Qd6#
      • 1...Be6
        • 2.Qd4#

Anticipated by 57310(1872), 207506(1872), 212972(1882)

This anticipates 64275(1926), 142031(1926)

There are these versions: 248100

FEATURES

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