MESON Chess Problem Database

Problem Display
PID: 102081 (NB5n/3p4/k2p2n1/3B3Q/1PPpp3/1p1p4/1p6/1K6 w - - 0 1)

Knotek, Ladislav

The Observer, 1949

(First published on Sun Oct 23 1949)

NB5n/3p4/k2p2n1/3B3Q/1PPpp3/1p1p4/1p6/1K6

#3

7 + 10

6490 yacpdb 2009
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qe8
        • threat
          • 3.Qc8#
      • 2.Qxh8
        • threat
          • 3.Qc8#
    • 1...Sh4
      • 2.Qe8
        • threat
          • 3.Qc8#
      • 2.Qxh8
        • threat
          • 3.Qc8#
    • 1...Sf8
      • 2.Qe8
        • threat
          • 3.Qc8#
    • 1...e3
      • 2.Qf3
        • threat
          • 3.Bb7#
      • 2.Qh1
        • threat
          • 3.Bb7#
  • Tries
    • 1.Bxe4?
      • threat
        • 2.Qa5#
        • 2.Qb5#
      • 1...d5
        • 2.Qxd5
          • threat
            • 3.Qb7#
            • 3.Qa5#
            • 3.Qb5#
            • 3.Qd6#
      • 1...Se5!
    • 1.Bc6?
      • threat
        • 2.Qa5#
        • 2.Qb5#
      • 1...Se5
        • 2.Qe8
          • threat
            • 3.Qc8#
        • 2.Qxh8
          • threat
            • 3.Qc8#
      • 1...d5
        • 2.Qxd5
          • threat
            • 3.Bb5#
            • 3.Bb7#
            • 3.Qa5#
            • 3.Qb5#
          • 2...dxc6
            • 3.Qxc6#
      • 1...dxc6!
    • 1.Qxg6?
      • threat
        • 2.Qxd6#
      • 1...Sf7
        • 2.Sc7+
          • 2...Kb6
            • 3.c5#
      • 1...Sxg6!
    • 1.Qe5?
      • threat
        • 2.Qxd6#
      • 1...dxe5
        • 2.Sc7+
          • 2...Kb6
            • 3.c5#
      • 1...Se7
        • 2.Sc7+
          • 2...Kb6
            • 3.Qxd4#
        • 2.Qxd4
          • threat
            • 3.Sc7#
            • 3.Qb6#
            • 3.Qa7#
      • 1...Sf7
        • 2.Sc7+
          • 2...Kb6
            • 3.Qxd4#
        • 2.Qxd4
          • threat
            • 3.Sc7#
            • 3.Qb6#
            • 3.Qa7#
      • 1...Sxe5!
    • 1.Qxh8?
      • threat
        • 2.Qc8#
      • 1...Se7
        • 2.Sc7+
          • 2...Kb6
            • 3.Qxd4#
        • 2.Qxd4
          • threat
            • 3.Sc7#
            • 3.Qb6#
            • 3.Qa7#
        • 2.Qd8
          • threat
            • 3.Qa5#
            • 3.Qb6#
            • 3.b5#
          • 2...Sxd5
            • 3.Qc8#
      • 1...Sf8
        • 2.Sc7+
          • 2...Kb6
            • 3.Qxd4#
        • 2.Qxd4
          • threat
            • 3.Sc7#
            • 3.Qb6#
            • 3.Qa7#
        • 2.Qh2
          • threat
            • 3.Qxd6#
        • 2.Qxf8
          • threat
            • 3.Qxd6#
            • 3.Qc8#
      • 1...Sxh8!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qd2
          • threat
            • 3.b5#
      • 1...Se5
        • 2.Sc7+
          • 2...Kb6
            • 3.c5#
      • 1...Se7
        • 2.Sc7+
          • 2...Kb6
            • 3.c5#
      • 1...d2
        • 2.Qxd2
          • threat
            • 3.b5#
      • 1...e3
        • 2.Qh1
          • threat
            • 3.Bb7#

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