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Problem Display

PID: 153773 (8/4ppRB/4p3/4k3/3RN1p1/2P3K1/8/8 w - - 0 1)

Anonymous

American Chess Journal, 1878

8/4ppRB/4p3/4k3/3RN1p1/2P3K1/8/8

#3

6 + 5

14986	White-Hume Collection	2015

SOLUTION

SOUND
Sets
- 1...f5
  - 2.Bxf5
    - 2...Kxf5
      - 3.Rg5#
    - 2...exf5
      - 3.Rxe7#
- 1...f6
  - 2.Sc5
    - 2...f5
      - 3.Sd7#
Tries
- 1.Rc4?
  - threat
    - 2.Rc5#
  - 1...Kd5
    - 2.Rc5#
  - 1...f5!
- 1.Rxg4?
  - threat
    - 2.Sc5
      - threat
        3.Sd7#
      - 2...Kf6
        3.Sd7#
    - 2.Rc4
      - threat
        3.Rc5#
      - 2...Kd5
        3.Rc5#
  - 1...f6
    - 2.Sc5
      - 2...f5
        3.Sd7#
    - 2.Rc4
      - threat
        3.Rc5#
      - 2...Kd5
        3.Rc5#
  - 1...f5!
- 1.Rg8?
  - threat
    - 2.Sc5
      - threat
        3.Sd7#
      - 2...Kf6
        3.Sd7#
    - 2.Ra8
      - threat
        3.Ra5#
    - 2.Rb8
      - threat
        3.Rb5#
    - 2.Rc8
      - threat
        3.Rc5#
  - 1...f6
    - 2.Sc5
      - 2...f5
        3.Sd7#
    - 2.Ra8
      - 2...f5
        3.Ra5#
    - 2.Rb8
      - 2...f5
        3.Rb5#
    - 2.Rc8
      - 2...f5
        3.Rc5#
  - 1...f5!
Keys
- 1.Bg6!
  - threat
    - 2.Bxf7
      - 2...Kf5
        3.Rg5#
  - 1...fxg6
    - 2.Kxg4
      - 2...g5
        3.Rxg5#
    - 2.Rxg6
      - 2...Kf5
        3.Rg5#
  - 1...f5
    - 2.Bxf5
      - 2...Kxf5
        3.Rg5#
      - 2...exf5
        3.Rxe7#
  - 1...f6
    - 2.Sc5
      - 2...f5
        3.Sd7#

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