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Problem Display

PID: 178453 (4k3/3R1R2/4n1P1/p7/8/K7/8/8 w - - 0 1)

Speckmann, Werner

Berliner Morgenpost, 1965

4k3/3R1R2/4n1P1/p7/8/K7/8/8

#3

4 + 3

6490	yacpdb	2018

SOLUTION

SOUND
Sets
- 1...Sd8
  - 2.Rde7#
- 1...Sf8
  - 2.Rfe7#
- 1...a4
  - 2.Rb7
    - 2...Kd8
      - 3.Rb8#
    - 2...Sd4
      - 3.Rb8#
    - 2...Sf4
      - 3.Rb8#
    - 2...Sc5
      - 3.Rb8#
    - 2...Sg5
      - 3.Rb8#
    - 2...Sc7
      - 3.Rb8#
    - 2...Sg7
      - 3.Rb8#
    - 2...Sd8
      - 3.Rbe7#
    - 2...Sf8
      - 3.Rb8#
Tries
- 1.Ra7?
  - 1...a4
    - 2.Rab7
      - 2...Kd8
        3.Rb8#
      - 2...Sd4
        3.Rb8#
      - 2...Sf4
        3.Rb8#
      - 2...Sc5
        3.Rb8#
      - 2...Sg5
        3.Rb8#
      - 2...Sc7
        3.Rb8#
      - 2...Sg7
        3.Rb8#
      - 2...Sd8
        3.Rbe7#
      - 2...Sf8
        3.Rb8#
  - 1...Sc7!
Keys
- 1.Rb7!
  - 1...a4
    - 2.Rh7
      - 2...Kd8
        3.Rb8#
      - 2...Kf8
        3.Rh8#
      - 2...Sd4
        3.Rb8#
        3.Rh8#
      - 2...Sf4
        3.Rb8#
        3.Rh8#
      - 2...Sc5
        3.Rb8#
        3.Rh8#
      - 2...Sg5
        3.Rb8#
        3.Rh8#
      - 2...Sc7
        3.Rb8#
      - 2...Sg7
        3.Rh8#
      - 2...Sd8
        3.Rh8#
      - 2...Sf8
        3.Rb8#

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).