MESON Chess Problem Database

Problem Display
PID: 15956 (Q4b2/4pk1K/8/6P1/8/8/6B1/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 1989

Q4b2/4pk1K/8/6P1/8/8/6B1/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qd5#
    • 1...Bh6
      • 2.Qg8#
    • 1...Bg7
      • 2.Qg8#
  • Tries
    • 1.Bc6?
      • 1...e5
        • 2.Qe8#
      • 1...e6
        • 2.Qe8#
      • 1...Bh6
        • 2.Qg8#
      • 1...Bg7
        • 2.Qg8#
      • 1...Ke6!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Qd5#
      • 1...Ke8!
  • Keys
    • 1.Qd8!
      • 1...Ke6
        • 2.Qd5#
      • 1...e6
        • 2.g6#
      • 1...Bh6
        • 2.Qg8#
      • 1...Bg7
        • 2.Qg8#
      • 1...e5
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(D)
    • B(c);OGATE::QAB1(D)
  • Tries
    • Try
      • B(A);
      • Vars
        • P(a);::QAB1(D)
        • B(c);OGATE::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • P(a);SBLOCK::P(B)
      • B(c);OGATE::QAB1(D)
      • P(a);N_GUARD::B(A)
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