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Problem Display

PID: 177606 (6K1/4p1N1/p3p1P1/2p3N1/2P2k1p/P6P/1B1P1P2/8 w - - 0 1)

Cyrulik, Stepan Pavlovich

2nd HM., Sahs (Latvia), 1974

6K1/4p1N1/p3p1P1/2p3N1/2P2k1p/P6P/1B1P1P2/8

#4

10 + 6

6490	yacpdb	2018

SOLUTION

COOKED
Keys
- 1.Kf7!
  - threat
    - 2.d3
      - 2...a5
        3.a4
        3...Kxg5
        4.Bc1#
        3...e5
        4.Bc1#
  - 1...Kxg5
    - 2.Be5
      - 2...a5
        3.a4
        3...Kh6
        4.Bf4#
  - 1...a5
    - 2.d3
      - threat
        3.a4
        3...Kxg5
        4.Bc1#
        3...e5
        4.Bc1#
      - 2...a4
        3.Bc3
        3...Kxg5
        4.Bd2#
        3...e5
        4.Bd2#
  - 1...e5
    - 2.Bc1
      - threat
        3.d3#
        3.d4#
      - 2...e4
        3.d4+
        3...e3
        4.Bxe3#
    - 2.d3
      - threat
        3.Bc1#
      - 2...e4
        3.S7e6+
        3...Kf5
        4.dxe4#
        3.dxe4
        threat
        4.S7e6#
        3...Kxg5
        4.Bc1#
        3...e6
        4.S7xe6#
- 1.Kh7!
  - 1...a5
    - 2.d3
      - 2...Kxg5
        3.Be5
        3...a4
        4.f4#
      - 2...a4
        3.Kh6
        3...e5
        4.Bc1#
  - 1...e5
    - 2.d3
      - threat
        3.Bc1#
      - 2...Kxg5
        3.Bxe5
        threat
        4.f4#
      - 2...e4
        3.S7e6+
        3...Kf5
        4.dxe4#

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).