MESON Chess Problem Database

Problem Display
PID: 7789 (4B3/5r2/4bQ2/7k/8/6K1/6P1/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 1993

4B3/5r2/4bQ2/7k/8/6K1/6P1/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Bxf7#
    • 1...Bg4
      • 2.Bxf7#
    • 1...Bd7
      • 2.Bxf7#
    • 1...Bc8
      • 2.Bxf7#
  • Tries
    • 1.Qxf7+?
      • 1...Kg5
        • 2.Qg6#
        • 2.Qf4#
      • 1...Kh6
        • 2.Qg6#
      • 1...Bxf7!
  • Keys
    • 1.Kf4!
      • 1...Ba2
        • 2.g4#
      • 1...Bb3
        • 2.g4#
      • 1...Bh3
        • 2.Bxf7#
      • 1...Bc4
        • 2.g4#
      • 1...Bg4
        • 2.Bxf7#
      • 1...Bd5
        • 2.g4#
      • 1...Bf5
        • 2.Qg5#
      • 1...Bd7
        • 2.Bxf7#
      • 1...Bc8
        • 2.Bxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::B(D),XR(c)
  • Tries
    • Try
      • Q(C);CHECK,XR(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • B(b);P_SPINB(b),XQ(C)
  • Actual
    • K(B);P_SPINQ(C),S_FLIGHT
    • Vars
      • B(b);N_GUARD::P(A)
      • B(b);N_GUARD::B(D),XR(c)
      • B(b);N_PINQ(C)::QAR1(C)
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