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Problem Display

PID: 29757 (1K6/4p3/4P3/1k2BN1Q/8/1p6/8/8 w - - 0 1)

Sokolsky, DM

The Problemist, 1991

1K6/4p3/4P3/1k2BN1Q/8/1p6/8/8

#3

5 + 3

SOLUTION

SOUND
Keys
- 1.Bb2!
  - threat
    - 2.Sd4+
      - 2...Ka4
        3.Qb5#
      - 2...Kb4
        3.Qb5#
      - 2...Kc4
        3.Qb5#
      - 2...Ka6
        3.Qb5#
      - 2...Kb6
        3.Qb5#
  - 1...Ka4
    - 2.Sd4
      - 2...Kb4
        3.Qb5#
  - 1...Kb4
    - 2.Sd4
      - threat
        3.Qb5#
      - 2...Ka4
        3.Qb5#
      - 2...Kc4
        3.Qb5#
  - 1...Kc4
    - 2.Sd4
      - threat
        3.Qb5#
      - 2...Kd3
        3.Qe2#
      - 2...Kb4
        3.Qb5#
  - 1...Ka5
    - 2.Sd4+
      - 2...Ka4
        3.Qb5#
      - 2...Kb4
        3.Qb5#
      - 2...Ka6
        3.Qb5#
      - 2...Kb6
        3.Qb5#
    - 2.Sd6+
      - 2...Ka4
        3.Qb5#
      - 2...Kb4
        3.Qb5#
      - 2...Ka6
        3.Qb5#
      - 2...Kb6
        3.Qb5#
  - 1...Kc5
    - 2.Sd4+
      - 2...Kb4
        3.Qb5#
      - 2...Kc4
        3.Qb5#
      - 2...Kb6
        3.Qb5#
      - 2...Kd6
        3.Ba3#
  - 1...Ka6
    - 2.Sd4
      - 2...Kb6
        3.Qb5#
  - 1...Kb6
    - 2.Sd4
      - 2...Ka6
        3.Qb5#
  - 1...Kc6
    - 2.Sd4+
      - 2...Kb6
        3.Qb5#
      - 2...Kd6
        3.Ba3#

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