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Problem Display

PID: 210009 (Q1B5/8/8/8/3P2p1/8/7k/3K4 w - - 0 1)

Ehrenstein, Moritz

Das Interessante Blatt, 1883

Q1B5/8/8/8/3P2p1/8/7k/3K4

#4

4 + 2

6490	yacpdb	2020

SOLUTION

SOUND
Keys
- 1.Bb7!
  - threat
    - 2.Qh8+
      - 2...Kg1
        3.Qh1+
        3...Kf2
        4.Qe1#
        3.Ke1
        3...g3
        4.Qh1#
        3.Ke2
        3...g3
        4.Qh1#
      - 2...Kg3
        3.Ke1
        3...Kf4
        4.Qe5#
        3.Ke2
        3...Kf4
        4.Qe5#
    - 2.Qa3
      - 2...Kg1
        3.Qg3+
        3...Kf1
        4.Ba6#
        4.Qe1#
        4.Qg2#
        3.Qb2
        threat
        4.Qg2#
        3...Kf1
        4.Qg2#
        3.Qa2
        threat
        4.Qg2#
        3...Kf1
        4.Qg2#
      - 2...g3
        3.Qf3
        threat
        4.Qh1#
        4.Qg2#
        3...Kg1
        4.Qg2#
        3...Kh3
        4.Qh5#
        3...g2
        4.Qxg2#
  - 1...Kg3
    - 2.Qh8
      - threat
        3.Ke1
        3...Kf4
        4.Qe5#
        3.Ke2
        3...Kf4
        4.Qe5#
      - 2...Kf2
        3.Qh2+
        3...Kf1
        4.Ba6#
        4.Qg2#
        3...Ke3
        4.Qd2#
  - 1...Kh3
    - 2.Qh8+
      - 2...Kg3
        3.Ke1
        3...Kf4
        4.Qe5#
        3.Ke2
        3...Kf4
        4.Qe5#
  - 1...g3
    - 2.Qh8+
      - 2...Kg1
        3.Qh1+
        3...Kf2
        4.Qe1#

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).