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Problem Display

PID: 170686 (3k1K2/6R1/8/1nN5/B7/8/8/8 w - - 0 1)

Martin, Johann

Basler Nachrichten, 1977

3k1K2/6R1/8/1nN5/B7/8/8/8

#3

4 + 2

6490	yacpdb	2018

SOLUTION

SOUND
Sets
- 1...Sc7
  - 2.Bd7
    - threat
      - 3.Sb7#
    - 2...Se6+
      - 3.Sxe6#
    - 2...Sb5
      - 3.Se6#
    - 2...Sd5
      - 3.Se6#
    - 2...Sa6
      - 3.Se6#
    - 2...Sa8
      - 3.Se6#
    - 2...Se8
      - 3.Se6#
Keys
- 1.Rb7!
  - 1...Kc8
    - 2.Ke7
      - 2...Sa3
        3.Bd7#
      - 2...Sc3
        3.Bd7#
      - 2...Sd4
        3.Bd7#
      - 2...Sd6
        3.Bd7#
      - 2...Sa7
        3.Bd7#
      - 2...Sc7
        3.Bd7#
  - 1...Sa3
    - 2.Bd7
      - threat
        3.Se6#
  - 1...Sc3
    - 2.Bd7
      - threat
        3.Se6#
  - 1...Sd4
    - 2.Bd7
      - 2...Se6+
        3.Sxe6#
      - 2...Sc2
        3.Se6#
      - 2...Se2
        3.Se6#
      - 2...Sb3
        3.Se6#
      - 2...Sf3
        3.Se6#
      - 2...Sb5
        3.Se6#
      - 2...Sf5
        3.Se6#
      - 2...Sc6
        3.Se6#
  - 1...Sd6
    - 2.Rb8+
      - 2...Kc7
        3.Sa6#
      - 2...Sc8
        3.Se6#
  - 1...Sa7
    - 2.Bd7
      - threat
        3.Se6#

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