MESON Chess Problem Database

Problem Display
PID: 4619 (4bRBK/5PR1/3k4/2p5/3P4/8/8/6B1 w - - 0 1)

Shinkman, William Anthony

Jamaica Gleaner, 1884

4bRBK/5PR1/3k4/2p5/3P4/8/8/6B1

#2

7 + 3

3925 The Golden Argosy 1929
56 The Problemist 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.fxe8S#
  • Tries
    • 1.fxe8Q?
      • threat
        • 2.Bh2#
        • 2.Rf6#
        • 2.Qg6#
        • 2.Qd7#
        • 2.Qe6#
        • 2.dxc5#
      • 1...c4
        • 2.Bh2#
        • 2.Rf6#
        • 2.Qg6#
        • 2.Qd7#
        • 2.Qe6#
      • 1...cxd4!
  • Keys
    • 1.dxc5+!
      • 1...Kd5
        • 2.fxe8Q#
      • 1...Ke5
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Kc6
        • 2.fxe8Q#
        • 2.fxe8B#
      • 1...Ke6
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Kc7
        • 2.fxe8Q#
      • 1...Kd7
        • 2.fxe8Q#
      • 1...Ke7
        • 2.fxe8Q#
        • 2.fxe8R#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::PXB(c)=S
  • Tries
    • Try
      • P(C);XB(c)
      • Threat
        • DUALS(6)
      • Refutation
        • P(a);XP(B)
  • Actual
    • P(B);CHECK,XP(a)
    • Vars
      • K(b);P-FLIGHT::PXB(c)=Q
      • K(b);S_FLIGHT::PXB(c)=Q
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