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Problem Display

PID: 15020 (4kr1n/5p2/3Q2p1/4p3/8/8/3K4/B7 w - - 0 1)

Froberg, Johan Hilding Laurentius

1st Prize, Tidskrift for Schack, 1957

4kr1n/5p2/3Q2p1/4p3/8/8/3K4/B7

#3

3 + 6

SOLUTION

SOUND
Sets
- 1...e4
  - 2.Qc6+
    - 2...Ke7
      - 3.Bf6#
    - 2...Kd8
      - 3.Bf6#
Tries
- 1.Bd4?
  - threat
    - 2.Bc5
      - threat
        3.Qe7#
    - 2.Bb6
      - threat
        3.Qd8#
      - 2...f5
        3.Qe6#
      - 2...f6
        3.Qe6#
  - 1...f5
    - 2.Qe6+
      - 2...Kd8
        3.Bb6#
  - 1...f6
    - 2.Qe6+
      - 2...Kd8
        3.Bb6#
  - 1...Rg8
    - 2.Bc5
      - threat
        3.Qe7#
  - 1...e4
    - 2.Qc6+
      - 2...Ke7
        3.Bf6#
      - 2...Kd8
        3.Bf6#
  - 1...g5
    - 2.Bb6
      - threat
        3.Qd8#
      - 2...f5
        3.Qe6#
      - 2...f6
        3.Qe6#
  - 1...exd4!
Keys
- 1.Bc3!
  - threat
    - 2.Bb4
      - threat
        3.Qe7#
    - 2.Ba5
      - threat
        3.Qd8#
      - 2...f5
        3.Qe6#
      - 2...f6
        3.Qe6#
  - 1...f5
    - 2.Qe6+
      - 2...Kd8
        3.Ba5#
  - 1...f6
    - 2.Qe6+
      - 2...Kd8
        3.Ba5#
  - 1...Rg8
    - 2.Bb4
      - threat
        3.Qe7#
  - 1...e4
    - 2.Qc6+
      - 2...Ke7
        3.Bf6#
      - 2...Kd8
        3.Bf6#
  - 1...g5
    - 2.Ba5
      - threat
        3.Qd8#
      - 2...f5
        3.Qe6#
      - 2...f6
        3.Qe6#

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