Problem Display
PID: 81047 (8/8/8/8/4QK2/P7/2N1p3/3k4 w - - 0 1)

Andreev, Aleksandr Grigorevich

Sovietskaya Kuban, 1965

8/8/8/8/4QK2/P7/2N1p3/3k4

#3

4 + 2


SOLUTION


  • SOUND
  • Tries
    • 1.Ke3?
      • threat
        • 2.Se1
          • threat
            • 3.Qb1#
          • 2...Kc1
            • 3.Qc2#
          • 2...Kxe1
            • 3.Qb1#
            • 3.Qh1#
      • 1...e1Q+
        • 2.Sxe1
          • threat
            • 3.Qb1#
          • 2...Kc1
            • 3.Qc2#
          • 2...Kxe1
            • 3.Qb1#
            • 3.Qh1#
      • 1...e1R+
        • 2.Sxe1
          • threat
            • 3.Qb1#
          • 2...Kc1
            • 3.Qc2#
          • 2...Kxe1
            • 3.Qb1#
            • 3.Qh1#
      • 1...e1S
        • 2.Sxe1
          • threat
            • 3.Qb1#
          • 2...Kc1
            • 3.Qc2#
          • 2...Kxe1
            • 3.Qb1#
            • 3.Qh1#
      • 1...e1B
        • 2.Sxe1
          • threat
            • 3.Qb1#
          • 2...Kc1
            • 3.Qc2#
          • 2...Kxe1
            • 3.Qb1#
            • 3.Qh1#
      • 1...Kc1!
    • 1.Sd4?
      • threat
        • 2.Qc2+
          • 2...Ke1
            • 3.Qxe2#
        • 2.Qd3+
          • 2...Kc1
            • 3.Qc2#
          • 2...Ke1
            • 3.Qxe2#
        • 2.Qxe2+
          • 2...Kc1
            • 3.Qc2#
      • 1...Kd2
        • 2.Qc2+
          • 2...Ke1
            • 3.Qxe2#
      • 1...e1S!
  • Keys
    • 1.Se1!
      • threat
        • 2.Ke3
          • threat
            • 3.Qb1#
          • 2...Kc1
            • 3.Qc2#
          • 2...Kxe1
            • 3.Qb1#
            • 3.Qh1#
      • 1...Kxe1
        • 2.Ke3
          • threat
            • 3.Qb1#
            • 3.Qh1#
          • 2...Kd1
            • 3.Qb1#
          • 2...Kf1
            • 3.Qh1#
      • 1...Kd2
        • 2.Qb1
          • 2...Kc3
            • 3.Qb4#

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).