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Problem Display

PID: 185288 (2B4B/3n2qn/4R3/N1p5/2Pk4/8/1PP5/K7 w - - 0 1)

Udartsev, Valentin Filipovich

Suomen Shakki, 1981

2B4B/3n2qn/4R3/N1p5/2Pk4/8/1PP5/K7

#3

8 + 5

SOLUTION

SOUND
Sets
- 1...Sb6
  - 2.Bxg7+
    - 2...Sf6
      - 3.Bxf6#
- 1...Sdf6
  - 2.Bxg7
    - 2...Sg5
      - 3.Bxf6#
    - 2...Sf8
      - 3.Bxf6#
- 1...Sb8
  - 2.Bxg7+
    - 2...Sf6
      - 3.Bxf6#
- 1...Sdf8
  - 2.Bxg7+
    - 2...Sf6
      - 3.Bxf6#
Keys
- 1.Re1!
  - threat
    - 2.Ba6
      - threat
        3.Sb3#
        3.Sc6#
  - 1...Se5
    - 2.Be6
      - threat
        3.Sb3#
      - 2...Qg3
        3.Sc6#
      - 2...Qa7
        3.Bxe5#
      - 2...Qb7
        3.Bxe5#
  - 1...Sb6
    - 2.Bxg7+
      - 2...Sf6
        3.Bxf6#
  - 1...Sdf6
    - 2.Bf5
      - threat
        3.c3#
      - 2...Se4
        3.Rxe4#
      - 2...Qg3
        3.Re4#
      - 2...Sd5
        3.Re4#
    - 2.Bxg7
      - 2...Sg5
        3.Bxf6#
      - 2...Sf8
        3.Bxf6#
  - 1...Sb8
    - 2.Bf5
      - threat
        3.Re4#
        3.c3#
    - 2.Be6
      - threat
        3.Sb3#
    - 2.Bxg7+
      - 2...Sf6
        3.Bxf6#

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