Problem Display
PID: 201321 (8/1r2n3/3N1Q2/4p1K1/kP6/6p1/1Rb3r1/8 w - - 0 1)

Dehler, Otto Georg Edgar

Deutsche Schachblatter, 1922

8/1r2n3/3N1Q2/4p1K1/kP6/6p1/1Rb3r1/8

#3

5 + 7


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Ka3
      • 2.Sc4+
        • 2...Ka4
          • 3.Qa6#
    • 1...Ra7
      • 2.Qf7
        • threat
          • 3.Qa2#
        • 2...Ka3
          • 3.Qa2#
        • 2...Bb3
          • 3.Qxb3#
        • 2...Bb1
          • 3.Qb3#
        • 2...Sd5
          • 3.Qxa7#
    • 1...Sg6
      • 2.Qe6
        • threat
          • 3.Qa2#
        • 2...Ka3
          • 3.Qa2#
        • 2...Bb3
          • 3.Qxb3#
        • 2...Bb1
          • 3.Qb3#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qa6#
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa1#
      • 1...Rg1
        • 2.Qa6#
      • 1...Re2
        • 2.Qa1#
      • 1...Rb5
        • 2.Qa1#
      • 1...Rb6
        • 2.Qa1#
      • 1...Ra7
        • 2.Qa1#
      • 1...Bb1
        • 2.Qa6#
      • 1...Bd1
        • 2.Qa6#
      • 1...Bd3
        • 2.Qa1#
      • 1...Sc6
        • 2.Qa1#
      • 1...Bb3!
    • 1.Qe6?
      • threat
        • 2.Qa2#
      • 1...Ka3
        • 2.Qa2#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Bb1
        • 2.Qb3#
      • 1...Sd5!
    • 1.Qf7?
      • threat
        • 2.Qa2#
      • 1...Ka3
        • 2.Qa2#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Bb1
        • 2.Qb3#
      • 1...Sd5!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Ra2+
          • 2...Kxb4
            • 3.Qa3#
      • 1...Bd3
        • 2.Qd1+
          • 2...Ka3
            • 3.Qb3#
            • 3.Qa1#
          • 2...Rc2
            • 3.Qa1#
          • 2...Bc2
            • 3.Qa1#
      • 1...Ra7
        • 2.Qf7
          • threat
            • 3.Qa2#
          • 2...Ka3
            • 3.Qa2#
          • 2...Bb3
            • 3.Qxb3#
          • 2...Bb1
            • 3.Qb3#
          • 2...Sd5
            • 3.Qxa7#
      • 1...Bd1
        • 2.Qxd1+
          • 2...Ka3
            • 3.Sc4#
            • 3.Qb3#
            • 3.Qa1#
          • 2...Rc2
            • 3.Qa1#

FEATURES


NOT CLASSIFIED


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).