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Problem Display

PID: 241273 (4B3/3p4/8/kP5R/1p4R1/2p5/2P5/3K2B1 w - - 0 1)

Shtern, David

Variantim, 2013

4B3/3p4/8/kP5R/1p4R1/2p5/2P5/3K2B1

#3

7 + 4

SOLUTION

SOUND
Sets
- 1...d5
  - 2.Rh6
    - threat
      - 3.Ra6#
    - 2...Ka4
      - 3.Ra6#
- 1...d6
  - 2.Rh7
    - threat
      - 3.Ra7#
    - 2...Ka4
      - 3.Ra7#
Tries
- 1.Ke1?
  - 1...b3
    - 2.cxb3
      - threat
        3.Ra4#
  - 1...d5
    - 2.Rh6
      - threat
        3.Ra6#
      - 2...Ka4
        3.Ra6#
  - 1...d6
    - 2.Rh7
      - threat
        3.Ra7#
      - 2...Ka4
        3.Ra7#
  - 1...Ka4!
- 1.Ke2?
  - 1...b3
    - 2.cxb3
      - threat
        3.Ra4#
  - 1...d5
    - 2.Rh6
      - threat
        3.Ra6#
      - 2...Ka4
        3.Ra6#
  - 1...d6
    - 2.Rh7
      - threat
        3.Ra7#
      - 2...Ka4
        3.Ra7#
  - 1...Ka4!
- 1.Bxd7?
  - threat
    - 2.Rh6
      - threat
        3.Ra6#
      - 2...Ka4
        3.Ra6#
    - 2.Rh8
      - threat
        3.Ra8#
      - 2...Ka4
        3.Ra8#
    - 2.b6+
      - 2...Ka6
        3.Bc8#
  - 1...b3
    - 2.b6+
      - 2...Ka6
        3.Bc8#
  - 1...Ka4!
Keys
- 1.Kc1!
  - 1...Ka4
    - 2.b6
      - 2...Ka3
        3.Ra5#
  - 1...b3
    - 2.cxb3
      - threat
        3.Ra4#
  - 1...d5
    - 2.Rh6
      - threat
        3.Ra6#
      - 2...Ka4
        3.Ra6#
  - 1...d6
    - 2.Rh7
      - threat
        3.Ra7#
      - 2...Ka4
        3.Ra7#

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