Problem Display
PID: 259828 (b1rb4/K1n5/1P3p2/1k1p4/1B2p3/PB2P1n1/2P5/1Q6 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Kopaev, Viacheslav Georgievich

Neue Zurcher Zeitung, 1994

b1rb4/K1n5/1P3p2/1k1p4/1B2p3/PB2P1n1/2P5/1Q6

#3

8 + 9


6490 yacpdb 2022

SOLUTION


  • SOUND
  • Tries
    • 1.Ba4+?
      • 1...Kc4
        • 2.Qa2#
        • 2.Qb3#
      • 1...Kxa4!
    • 1.c4+?
      • 1...Kc6
        • 2.Ba4+
          • 2...Sb5+
            • 3.Bxb5#
      • 1...dxc4!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qd4#
      • 1...Kc6
        • 2.Qxd5+
          • 2...Sxd5
            • 3.Ba4#
      • 1...Sf1
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qe2#
            • 3.Qxf1#
            • 3.Qd4#
      • 1...Sh1
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qe2#
            • 3.Qf1#
            • 3.Qd4#
      • 1...Se2
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qxe2#
      • 1...Sf5
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qe2#
            • 3.Qf1#
      • 1...Sh5
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qe2#
            • 3.Qf1#
            • 3.Qd4#
      • 1...Se6
        • 2.c4+
          • 2...Kc6
            • 3.Ba4#
            • 3.Qxd5#
          • 2...Rxc4
            • 3.Ba4#
          • 2...dxc4
            • 3.Ba4#
      • 1...d4
        • 2.Ba4+
          • 2...Kxa4
            • 3.c4#
          • 2...Kc4
            • 3.Qxd4#

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).