MESON Chess Problem Database

Problem Display
PID: 7587 (8/8/7N/3K4/B5p1/4pk2/7Q/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 1991

8/8/7N/3K4/B5p1/4pk2/7Q/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sd4#
        • 2.Sh4#
      • 1...e2
        • 2.Qg3#
      • 1...g3!
    • 1.Qg2+?
      • 1...Kf4
        • 2.Qxg4#
      • 1...Kxg2!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Kc4#
        • 2.Kd4#
        • 2.Kc5#
        • 2.Ke5#
        • 2.Kd6#
        • 2.Ke6#
      • 1...e2
        • 2.Kd4#
      • 1...g3
        • 2.Ke5#

Anticipated by 12314(1977)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Threat
      • DUALS(6)
    • Vars
      • P(a);::B(B)+K(C)
      • P(c);::B(B)+K(C)
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