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Problem Display

PID: 269963 (8/8/3P4/7K/3Bk1N1/8/6P1/Q7 w - - 0 1)

Petrasinovic, Petrasin

Shakhmatnaya kompozitsiya, 2020

8/8/3P4/7K/3Bk1N1/8/6P1/Q7

#3

6 + 1

SOLUTION

SOUND
Sets
- 1...Kf4
  - 2.Qe1
    - 2...Kf5
      - 3.Qe5#
- 1...Kf5
  - 2.Qe1
    - 2...Kf4
      - 3.Qe5#
Tries
- 1.Sf6+?
  - 1...Kf4
    - 2.Qe1
      - 2...Kf5
        3.Qe4#
        3.Qe5#
    - 2.Qf1+
      - 2...Kg3
        3.Be5#
  - 1...Kf5
    - 2.Qe1
      - 2...Kf4
        3.Qf2#
        3.Qe5#
    - 2.Qa2
      - 2...Kf4
        3.Qf2#
    - 2.Qa5+
      - 2...Kf4
        3.Qe5#
        3.Qg5#
      - 2...Ke6
        3.Qd5#
    - 2.Qa8
      - threat
        3.Qe4#
      - 2...Kf4
        3.Qf3#
      - 2...Ke6
        3.Qd5#
  - 1...Kd3!
- 1.Qc3?
  - 1...Kf5
    - 2.Qe1
      - 2...Kf4
        3.Qe5#
  - 1...Kd5!
- 1.Qd1?
  - threat
    - 2.Se3
      - 2...Kf4
        3.Qf3#
        3.Qg4#
    - 2.Sf6+
      - 2...Kf4
        3.Qf3#
        3.Qg4#
      - 2...Kf5
        3.Qg4#
    - 2.Be3
      - 2...Kf5
        3.Qd5#
  - 1...Kf5
    - 2.Qe2
      - 2...Kf4
        3.Qf3#
        3.Qe5#
    - 2.Qe1
      - 2...Kf4
        3.Qe5#
  - 1...Kd5!
Keys
- 1.Qa4!
  - 1...Kd3
    - 2.Sf2+
      - 2...Kd2
        3.Qd1#
      - 2...Ke2
        3.Qd1#
  - 1...Kf4
    - 2.Qc2
      - 2...Kg3
        3.Be5#
        3.Qf2#
  - 1...Kd5
    - 2.Sf6+
      - 2...Kxd6
        3.Qd7#
      - 2...Ke6
        3.Qd7#
  - 1...Kf5
    - 2.Qe8
      - 2...Kf4
        3.Qe5#

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