MESON Chess Problem Database

Problem Display
PID: 262466 (5Q1n/3p2pq/3Nk2r/2K1pppb/7n/4N3/8/8 w - - 0 1)

Onkoud, Abdelaziz

Europe Echecs, 1996

5Q1n/3p2pq/3Nk2r/2K1pppb/7n/4N3/8/8

#2

4 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Qf7#
  • Tries
    • 1.Qe8+?
      • 1...Kf6
        • 2.Sd5#
      • 1...Bxe8!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc7#
        • 2.Qe7#
      • 1...e4
        • 2.Qe7#
      • 1...Bf7
        • 2.Qe7#
      • 1...S4g6
        • 2.Sc7#
        • 2.Qxf5#
      • 1...S8g6
        • 2.Sc7#
        • 2.Qf7#
      • 1...Sf7
        • 2.Qe7#
        • 2.Qe8#
      • 1...g6
        • 2.Sc7#
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(k);N_GUARD,S_CUTB(e)::QAB1(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(f);P-FLIGHT,S_CUTB(e)::S(A)
      • Refutation
        • B(e);XQ(D)
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);::QAR1(D)
      • B(e);::QAR1(D)
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