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Problem Display

PID: 270272 (8/8/3P4/5N1P/4Bk2/2P5/QN4K1/8 w - - 0 1)

Petrasinovic, Petrasin

Problem Paradise, 2020

8/8/3P4/5N1P/4Bk2/2P5/QN4K1/8

#3

8 + 1

SOLUTION

SOUND
Tries
- 1.Sd3+?
  - 1...Kg4
    - 2.Qf7
      - 2...Kg5
        3.Qg6#
    - 2.Qg8+
      - 2...Kxh5
        3.Sf4#
        3.Bf3#
  - 1...Kg5
    - 2.Qf7
      - 2...Kg4
        3.Qg6#
    - 2.Qg8+
      - 2...Kxh5
        3.Sf4#
        3.Bf3#
      - 2...Kf6
        3.Qg6#
  - 1...Kxe4!
- 1.Qe6?
  - threat
    - 2.Kh3
      - 2...Kg5
        3.Qh6#
    - 2.Sd3+
      - 2...Kg4
        3.Qg6#
      - 2...Kg5
        3.Qg6#
    - 2.Qe7
      - 2...Kg4
        3.Qh4#
  - 1...Kg5
    - 2.Kf3
      - 2...Kxh5
        3.Qh6#
    - 2.Kg3
      - 2...Kxh5
        3.Qh6#
  - 1...Kg4!
- 1.Qg8?
  - 1...Ke5
    - 2.Qg5
      - 2...Kxe4
        3.Sg3#
      - 2...Ke6
        3.Qe7#
  - 1...Kxe4!
Keys
- 1.Qf7!
  - threat
    - 2.Qe7
      - 2...Kg4
        3.Qh4#
  - 1...Kxe4
    - 2.Sg3+
      - 2...Ke3
        3.Qf2#
      - 2...Ke5
        3.Sc4#
  - 1...Kg4
    - 2.Sd3
      - 2...Kg5
        3.Qg6#
  - 1...Ke5
    - 2.Kg3
      - 2...Kxe4
        3.Qe6#
  - 1...Kg5
    - 2.Sd3
      - 2...Kg4
        3.Qg6#

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).