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Problem Display

PID: 226548 (8/4K3/p7/8/k7/8/PP1Q4/8 w - - 0 1)

Hemmingsson, Artur

Tidskrift for Schack, 1977

8/4K3/p7/8/k7/8/PP1Q4/8

#3

4 + 2

SOLUTION

SOUND
Tries
- 1.Kd6?
  - threat
    - 2.Kc5
      - 2...a5
        3.Qf4#
        3.Qd1#
        3.Qc2#
        3.Qd4#
        3.Qd7#
    - 2.Kc6
      - 2...a5
        3.Qf4#
        3.Qd4#
  - 1...a5
    - 2.Qd3
      - 2...Kb4
        3.Qb3#
    - 2.Qd5
      - 2...Kb4
        3.Qb3#
  - 1...Kb5!
- 1.Qc3?
  - threat
    - 2.Qc5
      - 2...a5
        3.Qc4#
        3.b3#
  - 1...a5
    - 2.Qb3#
    - 2.Qc4#
  - 1...Kb5!
- 1.Qd4+?
  - 1...Ka5
    - 2.Qc5+
      - 2...Ka4
        3.b3#
  - 1...Kb5!
- 1.Qd5?
  - threat
    - 2.Qc5
      - 2...a5
        3.Qc4#
        3.b3#
    - 2.a3
      - 2...a5
        3.Qc4#
  - 1...a5
    - 2.Qb3#
    - 2.Qc4#
  - 1...Kb4!
- 1.b3+?
  - 1...Kb5
    - 2.Qd6
      - 2...Ka5
        3.Qc5#
      - 2...a5
        3.a4#
  - 1...Ka3!
Keys
- 1.Qd6!
  - threat
    - 2.Qc5
      - 2...a5
        3.Qc4#
        3.b3#
    - 2.Qb6
      - 2...a5
        3.Qb3#
  - 1...Ka5
    - 2.Qc5+
      - 2...Ka4
        3.b3#
  - 1...Kb5
    - 2.b3
      - 2...Ka5
        3.Qc5#
      - 2...a5
        3.a4#
  - 1...a5
    - 2.b3+
      - 2...Kb5
        3.a4#

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