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Problem Display

PID: 270052 (3Q4/8/1p1PPB2/2k5/8/2N5/3K4/8 w - - 0 1)

Petrasinovic, Petrasin

Tidskrift for Schack, 2001

3Q4/8/1p1PPB2/2k5/8/2N5/3K4/8

#3

6 + 2

SOLUTION

SOUND
Sets
- 1...Kc6
  - 2.Qc7#
- 1...b5
  - 2.Qa5
    - 2...Kc4
      - 3.Qxb5#
    - 2...Kc6
      - 3.Qc7#
    - 2...Kxd6
      - 3.Qb6#
Tries
- 1.Kd1?
  - 1...Kc4
    - 2.Qxb6
      - 2...Kd3
        3.Qd4#
  - 1...b5
    - 2.Qa5
      - 2...Kc4
        3.Qxb5#
      - 2...Kc6
        3.Qc7#
      - 2...Kxd6
        3.Qb6#
  - 1...Kb4!
- 1.Kc2?
  - threat
    - 2.Kb3
      - threat
        3.Qc7#
      - 2...Kc6
        3.Qc7#
  - 1...Kb4
    - 2.Qxb6+
      - 2...Ka3
        3.Qa5#
        3.Qc5#
        3.Qb2#
        3.Qb3#
      - 2...Kc4
        3.Qd4#
        3.Qb5#
  - 1...Kc4!
- 1.Kd3?
  - 1...b5
    - 2.Qa5
      - 2...Kc6
        3.Qc7#
      - 2...Kxd6
        3.Qb6#
  - 1...Kb4!
- 1.Qxb6+?
  - 1...Kc4
    - 2.Qb5#
  - 1...Kxb6!
- 1.Qd7?
  - threat
    - 2.Qb5+
      - 2...Kxd6
        3.Qxb6#
  - 1...b5
    - 2.Qxb5+
      - 2...Kxd6
        3.Qb6#
  - 1...Kb4!
- 1.Qc8+?
  - 1...Kxd6
    - 2.Qc4
      - 2...b5
        3.Se4#
        3.Sxb5#
    - 2.e7
      - 2...b5
        3.e8S#
  - 1...Kb4!
Keys
- 1.Kc1!
  - 1...Kb4
    - 2.Qxb6+
      - 2...Ka3
        3.Qb2#
      - 2...Kc4
        3.Qb5#
  - 1...Kc4
    - 2.Qxb6
      - 2...Kd3
        3.Qd4#
  - 1...b5
    - 2.Qa5
      - 2...Kc4
        3.Qxb5#
      - 2...Kc6
        3.Qc7#
      - 2...Kxd6
        3.Qb6#

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