MESON Chess Problem Database

Problem Display
PID: 76535 (1k1NR3/1P1r4/K3P3/8/8/8/8/8 w - - 0 1)

Cafferata, Louis William

The Tablet, 1933

(First published on Sat Dec 9 1933)

1k1NR3/1P1r4/K3P3/8/8/8/8/8

#2

5 + 2

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Sc6#
  • Tries
    • 1.Sf7+?
      • 1...Kc7
        • 2.Rc8#
      • 1...Rd8!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sc6#
      • 1...Rxb7+
        • 2.Sxb7#
      • 1...Rxd8
        • 2.Rxd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::R(E)+S(D),DCHECK
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(E)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • R(E)+S(D),DCHECK
    • Vars
      • R(a);CHECK,XP(C)::R(E)+S(D),XR(a)
      • R(a);OGATE,P_SPINR(a),XS(D)::R(E),XR(a)
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