MESON Chess Problem Database

Problem Display
PID: 159963 (8/8/4p3/2B1p2Q/BK2k3/8/8/8 w - - 0 1)

Lincoln, Robert A

British Chess Magazine, 2016

8/8/4p3/2B1p2Q/BK2k3/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Bc6+?
      • 1...Kd3
        • 2.Qd1#
      • 1...Kf4!
    • 1.Qg4+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd3!
    • 1.Qf7?
      • 1...Kd5
        • 2.Qb7#
      • 1...Kd3!
    • 1.Qh3?
      • 1...Kd5
        • 2.Qd3#
      • 1...Kf4!
  • Keys
    • 1.Bd1!
      • threat
        • 2.Qf3#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kf4
        • 2.Qg4#
      • 1...Kd5
        • 2.Bf3#

FEATURES

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