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Problem Display

PID: 74359 (k7/pp1Npq2/4pp1b/1P6/3BB3/2N4R/4P1P1/K4b2 w - - 0 1)

Howard, David M

Problem Observer, 2007

k7/pp1Npq2/4pp1b/1P6/3BB3/2N4R/4P1P1/K4b2

#3

9 + 9

SOLUTION

SOUND
Sets
- 1...Bc1
  - 2.Rh8+
    - 2...Qe8
      - 3.Rxe8#
    - 2...Qg8
      - 3.Rxg8#
    - 2...Qf8
      - 3.Rxf8#
- 1...Bd2
  - 2.Rh8+
    - 2...Qe8
      - 3.Rxe8#
    - 2...Qg8
      - 3.Rxg8#
    - 2...Qf8
      - 3.Rxf8#
- 1...Be3
  - 2.Rh8+
    - 2...Qe8
      - 3.Rxe8#
    - 2...Qg8
      - 3.Rxg8#
    - 2...Qf8
      - 3.Rxf8#
- 1...Bg5
  - 2.Rh8+
    - 2...Qe8
      - 3.Rxe8#
    - 2...Qg8
      - 3.Rxg8#
    - 2...Qf8
      - 3.Rxf8#
- 1...a5
  - 2.bxa5 ep
    - threat
      - 3.Bxb7#
      - 3.axb7#
- 1...a6
  - 2.bxa6
    - threat
      - 3.Bxb7#
      - 3.axb7#
Tries
- 1.Sd5?
  - threat
    - 2.Sc7#
  - 1...Bf4
    - 2.S5b6+
      - 2...axb6
        3.Ra3#
  - 1...exd5!
Keys
- 1.Sa4!
  - threat
    - 2.Sab6+
      - 2...axb6
        3.Ra3#
  - 1...Bc1
    - 2.Rh8+
      - 2...Qe8
        3.Rxe8#
      - 2...Qg8
        3.Rxg8#
      - 2...Qf8
        3.Rxf8#
  - 1...Bd2
    - 2.Rh8+
      - 2...Qe8
        3.Rxe8#
      - 2...Qg8
        3.Rxg8#
      - 2...Qf8
        3.Rxf8#
  - 1...Be3
    - 2.Rh8+
      - 2...Qe8
        3.Rxe8#
      - 2...Qg8
        3.Rxg8#
      - 2...Qf8
        3.Rxf8#
  - 1...a5
    - 2.bxa5 ep
      - threat
        3.Bxb7#
        3.axb7#
  - 1...a6
    - 2.bxa6
      - threat
        3.Bxb7#
        3.axb7#

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