Problem Display
PID: 248741 (1K6/8/8/3Q4/1B1N4/3n4/3r4/3k4 w - - 0 1)

Ostwald, Ralph

Deutsche Schachzeitung, 1981

1K6/8/8/3Q4/1B1N4/3n4/3r4/3k4

#3

4 + 3


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qg2
        • threat
          • 3.Qg1#
          • 3.Qe2#
        • 2...Kd1
          • 3.Qxd2#
    • 1...Ra2
      • 2.Qh1+
        • 2...Se1
          • 3.Qxe1#
    • 1...Rb2
      • 2.Qh1+
        • 2...Se1
          • 3.Qxe1#
    • 1...Rc2
      • 2.Qh1+
        • 2...Se1
          • 3.Qxe1#
    • 1...Re2
      • 2.Qb3+
        • 2...Kc1
          • 3.Sxe2#
        • 2...Rc2
          • 3.Qxc2#
    • 1...Sc1
      • 2.Qh1#
    • 1...Sb2
      • 2.Qh1#
    • 1...Sxb4
      • 2.Qh1#
    • 1...Sf4
      • 2.Qh1#
    • 1...Sc5
      • 2.Qh1#
    • 1...Se5
      • 2.Qh1#
  • Tries
    • 1.Qf3+?
      • 1...Re2
        • 2.Qxe2+
          • 2...Kc1
            • 3.Qc2#
      • 1...Kc1!
    • 1.Qh5+?
      • 1...Re2
        • 2.Qxe2+
          • 2...Kc1
            • 3.Qc2#
      • 1...Kc1!
  • Keys
    • 1.Qa8!
      • 1...Ke1
        • 2.Qg2
          • threat
            • 3.Qg1#
            • 3.Qe2#
          • 2...Kd1
            • 3.Qxd2#
      • 1...Ra2
        • 2.Qh1+
          • 2...Se1
            • 3.Qxe1#
      • 1...Rb2
        • 2.Qh1+
          • 2...Se1
            • 3.Qxe1#
      • 1...Rc2
        • 2.Qh1+
          • 2...Se1
            • 3.Qxe1#
      • 1...Re2
        • 2.Qa4+
          • 2...Kc1
            • 3.Qa1#
          • 2...Rc2
            • 3.Qxc2#
      • 1...Rf2
        • 2.Qa4+
          • 2...Kc1
            • 3.Qa1#
          • 2...Rc2
            • 3.Qxc2#
      • 1...Rg2
        • 2.Qa4+
          • 2...Kc1
            • 3.Qa1#
          • 2...Rc2
            • 3.Qxc2#
      • 1...Rh2
        • 2.Qa4+
          • 2...Kc1
            • 3.Qa1#
          • 2...Rc2
            • 3.Qxc2#

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).