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Problem Display

PID: 74956 (8/8/7K/8/8/B7/P2N2nR/k7 w - - 0 1)

Makaronets, Leonid

Problem Online, 2006

8/8/7K/8/8/B7/P2N2nR/k7

#3

5 + 2

SOLUTION

SOUND
Sets
- 1...Se1
  - 2.Sb3+
    - 2...Kb1
      - 3.Rb2#
- 1...Se3
  - 2.Sb3+
    - 2...Kb1
      - 3.Rb2#
- 1...Sf4
  - 2.Sb3+
    - 2...Kb1
      - 3.Rb2#
- 1...Sh4
  - 2.Sb3+
    - 2...Kb1
      - 3.Rb2#
Tries
- 1.Kg5?
  - 1...Se1
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Se3
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sf4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sh4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Kxa2!
- 1.Kg7?
  - 1...Se1
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Se3
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sf4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sh4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Kxa2!
- 1.Kh7?
  - 1...Se1
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Se3
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sf4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sh4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Kxa2!
Keys
- 1.Bc1!
  - 1...Kxa2
    - 2.Rh5
      - threat
        3.Ra5#
      - 2...Ka1
        3.Ra5#
  - 1...Se1
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Se3
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sf4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
  - 1...Sh4
    - 2.Sb3+
      - 2...Kb1
        3.Rb2#
    - 2.Rxh4
      - 2...Kxa2
        3.Ra4#

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