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Problem Display

PID: 197507 (8/8/4p3/1K1k3B/8/2Q3p1/5P2/8 w - - 0 1)

Lindgren, Frithiof

Norsk Sjakkblad, 1920

8/8/4p3/1K1k3B/8/2Q3p1/5P2/8

#3

4 + 3

6490	yacpdb	2019

SOLUTION

SOUND
Sets
- 1...Ke4
  - 2.Bg6+
    - 2...Kf4
      - 3.Qxg3#
    - 2...Kd5
      - 3.Qc5#
- 1...e5
  - 2.Bg4
    - threat
      - 3.Qd3#
    - 2...Ke4
      - 3.Qc4#
    - 2...Kd6
      - 3.Qc5#
    - 2...e4
      - 3.Qc5#
  - 2.Qc6+
    - 2...Kd4
      - 3.Qc4#
Tries
- 1.Bg6?
  - threat
    - 2.Qc5#
  - 1...e5
    - 2.Bf5
      - threat
        3.Qd2#
        3.Qd3#
        3.Qc5#
      - 2...Kd6
        3.Qc5#
    - 2.Qc6+
      - 2...Kd4
        3.Qc4#
        3.Qc5#
  - 1...Kd6!
- 1.f3?
  - threat
    - 2.Qc5#
  - 1...e5
    - 2.Bg4
      - threat
        3.Qd2#
        3.Qd3#
        3.Qc5#
      - 2...Kd6
        3.Qc5#
  - 1...Kd6!
Keys
- 1.Kb6!
  - threat
    - 2.Bf3+
      - 2...Kd6
        3.Qc7#
  - 1...Ke4
    - 2.Bg6+
      - 2...Kf4
        3.Qxg3#
      - 2...Kd5
        3.Qc5#
  - 1...Kd6
    - 2.Qc5+
      - 2...Kd7
        3.Qc7#
  - 1...e5
    - 2.Bg4
      - threat
        3.Qd3#
      - 2...Ke4
        3.Qc4#
      - 2...Kd6
        3.Qc5#
      - 2...e4
        3.Qc5#

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).