MESON Chess Problem Database

Problem Display
PID: 17613 (5k2/4pPp1/8/8/8/5R2/5K2/5Q2 w - - 0 1)

Hartong, Jan

2nd Comm., Bulletin Ouvrier des Echecs, 1948

5k2/4pPp1/8/8/8/5R2/5K2/5Q2

#2

4 + 3

3310 2345 Chess Problems 1997
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa6?
      • threat
        • 2.Qc8#
        • 2.Qa8#
      • 1...e5
        • 2.Qa3#
        • 2.Qd6#
      • 1...e6
        • 2.Qa3#
        • 2.Qd6#
      • 1...g5
        • 2.Qh6#
      • 1...g6!
    • 1.Qc1?
      • threat
        • 2.Qc8#
      • 1...e5
        • 2.Qa3#
        • 2.Qc5#
      • 1...e6
        • 2.Qa3#
        • 2.Qc5#
      • 1...g6
        • 2.Qh6#
      • 1...g5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa8#
      • 1...e5
        • 2.Qa3#
      • 1...e6
        • 2.Qa3#
      • 1...g5
        • 2.Qh8#
      • 1...g6
        • 2.Qh8#

This anticipates 88764(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • P(a);OGATEB::QAB(A)
      • P(b);OGATE::QAR2(A)
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