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Problem Display

PID: 209423 (6K1/3N4/2N3QB/1p1k4/8/1b6/3ppn2/2nrb3 w - - 0 1)

Bull, Cecil Alfred Lucas

Source?, 1926

6K1/3N4/2N3QB/1p1k4/8/1b6/3ppn2/2nrb3

#3

5 + 9

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Bc2
  - 2.Sb6+
    - 2...Kc5
      - 3.Be3#
- 1...Ba4
  - 2.Sb6+
    - 2...Kc5
      - 3.Be3#
- 1...Bc4
  - 2.Kf7
    - threat
      - 3.Qe6#
  - 2.Be3
    - threat
      - 3.Sb4#
      - 3.Se7#
      - 3.Sb6#
  - 2.Bf8
    - threat
      - 3.Sb6#
Keys
- 1.Bg7!
  - threat
    - 2.Sa5
      - threat
        3.Qc6#
    - 2.Bd4
      - threat
        3.Sb6#
      - 2...Kc4
        3.Sb6#
  - 1...Kc4
    - 2.Qe6+
      - 2...Kd3
        3.Sb4#
  - 1...Sg4
    - 2.Sb4+
      - 2...Kc4
        3.Qe4#
        3.Qxg4#
    - 2.Se7+
      - 2...Kc4
        3.Qe4#
  - 1...Ba2
    - 2.Sa5
      - threat
        3.Qc6#
  - 1...Bc2
    - 2.Sb6+
      - 2...Kc5
        3.Bd4#
  - 1...Ba4
    - 2.Sb6+
      - 2...Kc5
        3.Bd4#
  - 1...Sa2
    - 2.Bd4
      - threat
        3.Sb6#
      - 2...Kc4
        3.Sb6#
  - 1...Scd3
    - 2.Bd4
      - threat
        3.Sb6#
      - 2...Kc4
        3.Sb6#
        3.Qf7#
        3.Qe6#
  - 1...Sfd3
    - 2.Se7+
      - 2...Kc4
        3.Qe4#
    - 2.Bd4
      - threat
        3.Sb6#
      - 2...Kc4
        3.Sb6#
        3.Qf7#
        3.Qe6#
  - 1...Se4
    - 2.Sb4+
      - 2...Kc4
        3.Qxe4#
    - 2.Se7+
      - 2...Kc4
        3.Qxe4#
  - 1...b4
    - 2.Se7+
      - 2...Kc4
        3.Qa6#

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