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Problem Display

PID: 127882 (K5n1/2NQp3/pkB5/1Np5/1rpn4/8/8/8 w - - 0 1)

Genttner, Jaroslav

Sach, 1941

K5n1/2NQp3/pkB5/1Np5/1rpn4/8/8/8

#3

5 + 8

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Ra4
  - 2.Sd5+
    - 2...Ka5
      - 3.Qc7#
      - 3.Qd8#
- 1...axb5
  - 2.Sd5+
    - 2...Ka5
      - 3.Qa7#
    - 2...Ka6
      - 3.Qa7#
- 1...a5
  - 2.Sd5+
    - 2...Ka6
      - 3.Sbc7#
      - 3.Bb7#
      - 3.Qc8#
      - 3.Qa7#
      - 3.Qb7#
Keys
- 1.Qd8!
  - threat
    - 2.Sd5+
      - 2...Kxc6
        3.Sa7#
    - 2.Se6+
      - 2...Kxc6
        3.Sa7#
    - 2.Se8+
      - 2...Kxc6
        3.Sa7#
  - 1...Ka5
    - 2.Se6+
      - 2...Ka4
        3.Sxc5#
  - 1...Kxc6
    - 2.Sa7+
      - 2...Kb6
        3.Scb5#
        3.Sd5#
        3.Se6#
        3.Se8#
  - 1...Rxb5
    - 2.Sxb5+
      - 2...Kxc6
        3.Sa7#
  - 1...Sxb5
    - 2.Sxb5+
      - 2...Kxc6
        3.Sa7#
  - 1...Sxc6
    - 2.Sd5+
      - 2...Kxb5
        3.Sc3#
  - 1...axb5
    - 2.Sa6+
      - 2...Kxa6
        3.Bb7#
      - 2...Kxc6
        3.Sb8#
  - 1...Se6
    - 2.Sd5+
      - 2...Kxc6
        3.Sa7#
    - 2.Sxe6+
      - 2...Kxc6
        3.Sa7#
  - 1...a5
    - 2.Sd5+
      - 2...Ka6
        3.Sbc7#
        3.Qb6#
        3.Qc8#
      - 2...Kxc6
        3.Sa7#
    - 2.Se6+
      - 2...Ka6
        3.Sxc5#
      - 2...Kxc6
        3.Sa7#
  - 1...e6
    - 2.Sd5+
      - 2...Kxc6
        3.Sa7#
    - 2.Sxe6+
      - 2...Kxc6
        3.Sa7#
    - 2.Se8+
      - 2...Kxc6
        3.Sa7#

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