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Problem Display

PID: 185644 (7r/6Q1/5p2/7k/8/8/4K2P/8 w - - 0 1)

Ursic, Andrej Anton

Bohemia, 1909

7r/6Q1/5p2/7k/8/8/4K2P/8

#3

3 + 3

6490	yacpdb	2018

SOLUTION

SOUND
Keys
- 1.Kf3!
  - threat
    - 2.Kf4
      - 2...Kh4
        3.Qxh8#
        3.Qg4#
      - 2...Rh6
        3.Qg4#
      - 2...Rh7
        3.Qxh7#
      - 2...Ra8
        3.Qh7#
      - 2...Rb8
        3.Qh7#
      - 2...Rc8
        3.Qh7#
      - 2...Rd8
        3.Qh7#
      - 2...Re8
        3.Qh7#
      - 2...Rf8
        3.Qh7#
      - 2...Rg8
        3.Qh7#
      - 2...f5
        3.Qg5#
    - 2.h4
      - 2...Kxh4
        3.Qg4#
      - 2...Rh6
        3.Qg4#
      - 2...Rh7
        3.Qxh7#
      - 2...Ra8
        3.Qh7#
      - 2...Rb8
        3.Qh7#
      - 2...Rc8
        3.Qh7#
      - 2...Rd8
        3.Qh7#
      - 2...Re8
        3.Qh7#
      - 2...Rf8
        3.Qh7#
      - 2...Rg8
        3.Qh7#
      - 2...f5
        3.Qg5#
  - 1...Rh7
    - 2.Qxh7+
      - 2...Kg5
        3.h4#
  - 1...Ra8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...Rb8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...Rc8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...Rd8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...Re8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...Rf8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...Rg8
    - 2.Qh7+
      - 2...Kg5
        3.h4#
  - 1...f5
    - 2.Kf4
      - threat
        3.Qg5#
      - 2...Kh4
        3.Qxh8#
      - 2...Rg8
        3.Qh7#

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).