MESON Chess Problem Database

Problem Display
PID: 76628 (5Q2/8/5PNp/6b1/6p1/7k/8/7K w - - 0 1)

Cafferata, Louis William

The Tablet, 1940

(First published on Sat Jul 6 1940)

5Q2/8/5PNp/6b1/6p1/7k/8/7K

#2

4 + 4

5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qc8#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qh2#
      • 1...g3
        • 2.Qe6#
        • 2.Qd7#
      • 1...Bf4!
    • 1.Qb8?
      • threat
        • 2.Qh2#
      • 1...g3
        • 2.Qc8#
      • 1...Bf4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qg2#
      • 1...Kg3
        • 2.Qg2#
      • 1...g3
        • 2.Qc8#

This anticipates 23875(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,SBLOCK::QAB(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Refutation
        • B(c);
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • P(b);OGATEB,SBLOCK::QAB(D)
      • Refutation
        • B(c);
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • P(b);OGATEB,SBLOCK::QAB(D)
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