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Problem Display

PID: 153326 (7k/5K1P/8/8/6P1/3P4/2b4R/7R w - - 0 1)

Becker, Richard

StrateGems, 2012

7k/5K1P/8/8/6P1/3P4/2b4R/7R

#4

6 + 2

SOLUTION

SOUND
Keys
- 1.Rb1!
  - threat
    - 2.Rb8#
  - 1...Bb3+
    - 2.Kf6
      - 2...Ba2
        3.Rb8+
        3...Bg8
        4.Rxg8#
        4.hxg8Q#
        4.hxg8S#
        4.hxg8B#
        4.hxg8R#
      - 2...Ba4
        3.Rb8+
        3...Be8
        4.Rxe8#
      - 2...Bc4
        3.Rb8+
        3...Bg8
        4.Rxg8#
        4.hxg8Q#
        4.hxg8S#
        4.hxg8B#
        4.hxg8R#
      - 2...Bd5
        3.Rb8+
        3...Bg8
        4.Rxg8#
        4.hxg8Q#
        4.hxg8S#
        4.hxg8B#
        4.hxg8R#
      - 2...Be6
        3.Rb8+
        3...Bc8
        4.Rxc8#
        3...Bg8
        4.Rxg8#
        4.hxg8Q#
        4.hxg8S#
        4.hxg8B#
        4.hxg8R#
      - 2...Bf7
        3.Rb8+
        3...Be8
        4.Rxe8#
        3...Bg8
        4.Rxg8#
        4.hxg8Q#
        4.hxg8S#
        4.hxg8B#
        4.hxg8R#
      - 2...Bg8
        3.hxg8Q+
        3...Kxg8
        4.Rb8#
        3.hxg8S+
        3...Kxg8
        4.Rb8#
        3.hxg8B+
        3...Kxg8
        4.Rb8#
        3.hxg8R+
        3...Kxg8
        4.Rb8#
  - 1...Bxb1
    - 2.Rd2
      - 2...Ba2+
        3.Rxa2
        3...Kxh7
        4.Rh2#
      - 2...Bxd3
        3.Rxd3
        3...Kxh7
        4.Rh3#
      - 2...Bc2
        3.Rxc2
        3...Kxh7
        4.Rh2#

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