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Problem Display

PID: 213724 (2N5/pN6/k7/p7/3P4/8/K7/2R5 w - - 0 1)

Breuer, Josef Johann

Kolner Schachzeitung, 1928

2N5/pN6/k7/p7/3P4/8/K7/2R5

#3

5 + 3

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Kb5
  - 2.Sbd6+
    - 2...Ka4
      - 3.Rc4#
    - 2...Kb4
      - 3.Rc4#
    - 2...Ka6
      - 3.Rc6#
Tries
- 1.Sd8?
  - 1...Kb5
    - 2.Sd6+
      - 2...Ka4
        3.Rc4#
      - 2...Kb4
        3.Rc4#
      - 2...Ka6
        3.Rc6#
      - 2...Kb6
        3.Rc6#
  - 1...a4!
- 1.Rc7?
  - threat
    - 2.Sbd6
      - 2...a4
        3.Rxa7#
  - 1...Kb5
    - 2.Sbd6+
      - 2...Ka4
        3.Rc4#
      - 2...Kb4
        3.Rc4#
      - 2...Ka6
        3.Rc6#
        3.Rxa7#
  - 1...a4!
Keys
- 1.d5!
  - threat
    - 2.Scd6
      - threat
        3.Rc6#
      - 2...Kb6
        3.Rc6#
  - 1...Kb5
    - 2.Sbd6+
      - 2...Ka4
        3.Rc4#
      - 2...Kb4
        3.Rc4#
      - 2...Ka6
        3.Rc6#
    - 2.Scd6+
      - 2...Ka4
        3.Rc4#
      - 2...Kb4
        3.Rc4#
      - 2...Ka6
        3.Rc6#
      - 2...Kb6
        3.Rc6#
  - 1...Kxb7
    - 2.Sd6+
      - 2...Ka6
        3.Rc6#
      - 2...Kb6
        3.Rc6#
      - 2...Ka8
        3.Rc8#
      - 2...Kb8
        3.Rc8#

FEATURES

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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).