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Problem Display

PID: 53128 (8/B1r2p2/1Q5p/3k3P/p5P1/p2P1N1K/P7/8 w - - 0 1)

Anonymous

Schach-Echo, 1933

8/B1r2p2/1Q5p/3k3P/p5P1/p2P1N1K/P7/8

#3

8 + 6

SOLUTION

SOUND
Sets
- 1...Rd7
  - 2.Qc5+
    - 2...Ke6
      - 3.Qe5#
- 1...Re7
  - 2.Qc5+
    - 2...Ke6
      - 3.Qc6#
Keys
- 1.Bb8!
  - threat
    - 2.Bxc7
      - threat
        3.Qd6#
    - 2.Qxc7
      - threat
        3.Qd6#
        3.Qc4#
      - 2...Ke6
        3.Qd6#
  - 1...Rc6
    - 2.Qd8+
      - 2...Kc5
        3.Qa5#
      - 2...Ke6
        3.Sd4#
      - 2...Rd6
        3.Qxd6#
  - 1...Rd7
    - 2.Qb5+
      - 2...Ke6
        3.Qe5#
  - 1...f5
    - 2.gxf5
      - 2...Rc1
        3.Qd6#
      - 2...Rc2
        3.Qd6#
      - 2...Rc3
        3.Qd6#
      - 2...Rc4
        3.Qd6#
      - 2...Rc5
        3.Qd6#
        3.Qe6#
      - 2...Rc6
        3.Qd4#
      - 2...Ra7
        3.Qb5#
        3.Qd6#
      - 2...Rb7
        3.Qd6#
      - 2...Rd7
        3.Qb5#
      - 2...Re7
        3.Qb5#
        3.Qd6#
      - 2...Rf7
        3.Qb5#
        3.Qd6#
      - 2...Rg7
        3.Qb5#
        3.Qd6#
      - 2...Rh7
        3.Qb5#
        3.Qd6#
      - 2...Rc8
        3.Qd6#
  - 1...f6
    - 2.Bxc7
      - 2...f5
        3.Qd6#

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).