MESON Chess Problem Database

Problem Display
PID: 7588 (1b5Q/8/8/3p1p2/4k3/8/4K3/2B5 w - - 0 1)

Lincoln, Robert A

The Problemist, 1991

1b5Q/8/8/3p1p2/4k3/8/4K3/2B5

#2

3 + 4

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Be3?
      • threat
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Be5
        • 2.Qh1#
      • 1...Ba7
        • 2.Qe8#
      • 1...f4!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qh4#
      • 1...d4
        • 2.Qxd4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Ba7
        • 2.Qe5#
      • 1...f4
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • P(b);::QAR1(C),XP(b)
        • B(d);SBLOCK::QAB(C)
        • B(d);N_GUARD::QAR(C)
      • Refutation
        • P(c);
  • Actual
    • B(A);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(b);::QAR1(C),XP(b)
      • B(d);N_GUARD::QAR1(C),XB(d)
      • B(d);N_GUARD::QAR1(C)
      • P(c);OGATEB,SBLOCK::QAB(C)
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