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Problem Display

PID: 122750 (8/ppK5/P7/k1p5/P1P5/2P5/1P6/R7 w - - 0 1)

Wurzburg, Otto

More White Rooks, 1911

8/ppK5/P7/k1p5/P1P5/2P5/1P6/R7

#3

7 + 4

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Kxa6
  - 2.a5
    - 2...b5
      - 3.axb5 ep#
    - 2...b6
      - 3.axb6#
- 1...b5
  - 2.axb5#
- 1...b6
  - 2.Kb7
    - 2...b5
      - 3.axb5#
Tries
- 1.Ra2?
  - 1...Kxa6
    - 2.a5
      - 2...b5
        3.axb5 ep#
      - 2...b6
        3.axb6#
  - 1...b6
    - 2.Kb7
      - 2...b5
        3.axb5#
  - 1...bxa6!
- 1.b3?
  - 1...Kxa6
    - 2.a5
      - 2...b5
        3.axb5 ep#
      - 2...b6
        3.axb6#
  - 1...b6
    - 2.Kb7
      - 2...b5
        3.axb5#
  - 1...bxa6!
- 1.axb7?
  - threat
    - 2.b8Q
      - threat
        3.Qxa7#
        3.Qb5#
      - 2...Ka6
        3.Qb5#
      - 2...a6
        3.Qb6#
    - 2.b8S
      - 2...a6
        3.Sc6#
  - 1...Ka6
    - 2.b8Q
      - 2...Ka5
        3.Qxa7#
        3.Qb5#
  - 1...a6!
Keys
- 1.Ra3!
  - 1...Kxa6
    - 2.a5
      - 2...b5
        3.axb5 ep#
      - 2...b6
        3.axb6#
  - 1...bxa6
    - 2.Rb3
      - 2...Kxa4
        3.Ra3#
  - 1...b6
    - 2.Kb7
      - 2...b5
        3.axb5#

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