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Problem Display

PID: 12753 (7n/1p4q1/1P1R4/2PNk1b1/3N1p1p/5B1P/5P2/K7 w - - 0 1)

Wormald, Robert Bownas

The Westminster Papers, 1869

7n/1p4q1/1P1R4/2PNk1b1/3N1p1p/5B1P/5P2/K7

#3

9 + 7

SOLUTION

SOUND
Sets
- 1...Qf6
  - 2.Sxf6
    - threat
      - 3.Sg4#
      - 3.Sd7#
    - 2...Bxf6
      - 3.Rd5#
- 1...Qh6
  - 2.Sf6
    - threat
      - 3.Sg4#
      - 3.Sd7#
    - 2...Qxf6
      - 3.Rd5#
    - 2...Bxf6
      - 3.Rd5#
- 1...Sg6
  - 2.Sb4
    - threat
      - 3.Sd3#
  - 2.Sf6
    - threat
      - 3.Sg4#
    - 2...Qxf6
      - 3.Rd5#
    - 2...Bxf6
      - 3.Rd5#
    - 2...Qd7
      - 3.Sxd7#
Tries
- 1.Se3?
  - threat
    - 2.Sc4#
    - 2.Sg4#
  - 1...Qd7
    - 2.Sc4#
  - 1...Qf7
    - 2.Sg4#
  - 1...Qg8
    - 2.Sg4#
  - 1...Bf6
    - 2.Sc4#
    - 2.Rd5#
  - 1...Bh6
    - 2.Sc4#
  - 1...Be7
    - 2.Sc4#
  - 1...Bd8
    - 2.Sc4#
  - 1...fxe3!
Keys
- 1.Sf6!
  - threat
    - 2.Sg4#
  - 1...Bh6
    - 2.Kb2
      - 2...Qxf6
        3.Rd5#
      - 2...Qf8
        3.Sg4#
        3.Sd7#
      - 2...Qg1
        3.Sd7#
      - 2...Qg2
        3.Sd7#
      - 2...Qg3
        3.Sd7#
      - 2...Qg4
        3.Sxg4#
      - 2...Qg5
        3.Sd7#
      - 2...Qg6
        3.Sd7#
      - 2...Qc7
        3.Sg4#
      - 2...Qd7
        3.Sxd7#
      - 2...Qe7
        3.Sg4#
      - 2...Qf7
        3.Sg4#
      - 2...Qh7
        3.Sg4#
      - 2...Qg8
        3.Sd7#
      - 2...Bg5
        3.Sg4#
      - 2...Sg6
        3.Sg4#
      - 2...Sf7
        3.Sd7#

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