Problem Display
PID: 172558 (8/2Q5/kp6/1p6/3P4/1P6/K7/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

200 Shakhmatni Zadachi, 1983

8/2Q5/kp6/1p6/3P4/1P6/K7/8

#3

4 + 3


3713 Snap 2018
6490 yacpdb 2018
  • SOUND
  • Tries
    • 1.Kb2?
      • 1...Ka5
        • 2.Qc6
          • 2...Kb4
            • 3.Qc3#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
        • 2.Qa7+
          • 2...Kb4
            • 3.Qa3#
      • 1...b4!
    • 1.Ka3?
      • 1...Ka5
        • 2.Qa7#
      • 1...b4+!
    • 1.Qc6?
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Kb2
          • 2...Kb4
            • 3.Qc3#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
        • 2.Qe8
          • 2...Kb4
            • 3.Qe1#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
      • 1...b4
        • 2.Qa8+
          • 2...Kb5
            • 3.Qa4#
      • 1...Ka7!
    • 1.Qd7?
      • 1...Ka5
        • 2.Qe8
          • 2...Kb4
            • 3.Qe1#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
      • 1...b4!
    • 1.Qe7?
      • 1...Ka5
        • 2.Qa3#
      • 1...b4!
    • 1.Qf7?
      • 1...Ka5
        • 2.Qe8
          • 2...Kb4
            • 3.Qe1#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
      • 1...b4!
    • 1.Qc8+?
      • 1...Ka5
        • 2.Qe8
          • 2...Kb4
            • 3.Qe1#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
      • 1...Ka7!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qe8
          • 2...Kb4
            • 3.Qe1#
          • 2...Ka6
            • 3.Qa8#
          • 2...b4
            • 3.Qa4#
      • 1...b4
        • 2.Qa8+
          • 2...Kb5
            • 3.Qa4#

Anticipated by 42784(1957)



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).