MESON Chess Problem Database

Problem Display
PID: 76428 (1n1b4/1K6/8/k7/1N2RB2/8/8/1R6 w - - 0 1)

Cafferata, Louis William

The Tablet, 1929

(First published on Sat Nov 23 1929)

1n1b4/1K6/8/k7/1N2RB2/8/8/1R6

#2

5 + 3

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Bc7+?
      • 1...Ka4
        • 2.Sc2#
      • 1...Kb5
        • 2.Sd3#
        • 2.Sa6#
      • 1...Bxc7!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Sa2#
        • 2.Sc2#
        • 2.Sd3#
        • 2.Sd5#
        • 2.Sa6#
        • 2.Sc6#
      • 1...Ka4
        • 2.Sc2#
      • 1...Kb5
        • 2.Sd3#
        • 2.Sa6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Bg5
        • 2.Sc6#
      • 1...Bf6
        • 2.Sc6#
      • 1...Be7
        • 2.Sc6#
      • 1...Sa6
        • 2.Sxa6#
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::S(B)
    • S(b);N_GUARD::S(B),XS(b)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)+S(B)
      • Refutation
        • B(c);XB(D)
  • Actual
    • B(D);
    • Threat
      • DUALS(6)
    • Vars
      • K(a);P-FLIGHT::R(C)+S(B)
      • S(b);::B(D)+S(B),DCHECK,XS(b)
      • B(c);::B(D)+S(B),DCHECK
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