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Problem Display

PID: 43708 (bNk2B2/KRP5/BP6/1P1n4/p7/2P5/8/8 w - - 0 1)

Caine, Walter Edmund

The Problemist, 1928

bNk2B2/KRP5/BP6/1P1n4/p7/2P5/8/8

#3

9 + 4

SOLUTION

SOUND
Sets
- 1...Bxb7
  - 2.Bxb7#
- 1...Sxc3
  - 2.Kxa8
    - threat
      - 3.Ra7#
- 1...Se3
  - 2.Kxa8
    - threat
      - 3.Ra7#
- 1...Sf4
  - 2.Kxa8
    - threat
      - 3.Ra7#
- 1...Sf6
  - 2.Kxa8
    - threat
      - 3.Ra7#
- 1...Sxc7
  - 2.Rxc7+
    - 2...Kd8
      - 3.Rc8#
- 1...Se7
  - 2.Kxa8
    - threat
      - 3.Ra7#
Tries
- 1.Kxa8?
  - threat
    - 2.Ra7#
  - 1...Sxc7+
    - 2.Rxc7+
      - 2...Kd8
        3.Rc8#
    - 2.bxc7
      - 2...a3
        3.Ra7#
  - 1...Sb4
    - 2.Bxb4
      - 2...a3
        3.Ra7#
    - 2.cxb4
      - 2...a3
        3.Ra7#
  - 1...Sxb6+!
Keys
- 1.Ba3!
  - 1...Sxc3
    - 2.Kxa8
      - threat
        3.Ra7#
  - 1...Sxb6
    - 2.Kxb6
      - 2...Bxb7
        3.Bxb7#
  - 1...Sxc7
    - 2.Rxc7+
      - 2...Kd8
        3.Rc8#
  - 1...Se3
    - 2.Kxa8
      - threat
        3.Ra7#
  - 1...Sb4
    - 2.cxb4
      - 2...Bxb7
        3.Bxb7#
  - 1...Sf4
    - 2.Kxa8
      - threat
        3.Ra7#
  - 1...Sf6
    - 2.Kxa8
      - threat
        3.Ra7#
  - 1...Se7
    - 2.Kxa8
      - threat
        3.Ra7#

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