Problem Display
PID: 162100 (1Q6/NN6/1n6/2pqP3/3k1P1n/P4BP1/2P2P2/2K5 w - - 0 1)

Ivanov, Vassily F

Zadachi i Etyudi, 1928

1Q6/NN6/1n6/2pqP3/3k1P1n/P4BP1/2P2P2/2K5

#3

11 + 5


SOLUTION


  • NO_SOLUTION
  • Sets
    • 1...Kc4
      • 2.Sa5+
        • 2...Kc3
          • 3.Sb5#
        • 2...Kd4
          • 3.Sb5#
    • 1...Qa2
      • 2.Sb5+
        • 2...Kc4
          • 3.S7d6#
    • 1...Qf7
      • 2.Sb5+
        • 2...Kc4
          • 3.S7d6#
    • 1...Qg8
      • 2.Sb5+
        • 2...Kc4
          • 3.S7d6#
    • 1...Qxe5
      • 2.Qxe5+
        • 2...Kc4
          • 3.Sa5#
          • 3.Sd6#
          • 3.Be2#
          • 3.Qxc5#
    • 1...Qd6
      • 2.Sb5+
        • 2...Kc4
          • 3.S7xd6#
      • 2.Qxd6+
        • 2...Kc3
          • 3.Qd3#
        • 2...Kc4
          • 3.Qxc5#
          • 3.Qd3#
        • 2...Sd5
          • 3.Qxc5#
    • 1...Sa4
      • 2.Sb5+
        • 2...Kc4
          • 3.Sa5#
    • 1...Sc4
      • 2.Sb5#
    • 1...Sd7
      • 2.Sb5+
        • 2...Kc4
          • 3.Sa5#
    • 1...Sa8
      • 2.Sb5+
        • 2...Kc4
          • 3.Sa5#
    • 1...Sc8
      • 2.Sb5+
        • 2...Kc4
          • 3.Sa5#
  • Tries
    • 1.Qg8?
      • threat
        • 2.Sb5+
          • 2...Kc4
            • 3.S7d6#
            • 3.Be2#
      • 1...Kc3
        • 2.Sb5+
          • 2...Kc4
            • 3.S7d6#
            • 3.Be2#
      • 1...Kc4
        • 2.Sa5+
          • 2...Kc3
            • 3.Sb5#
          • 2...Kd4
            • 3.Sb5#
        • 2.Sd6+
          • 2...Kc3
            • 3.Sab5#
          • 2...Kd4
            • 3.Sab5#
      • 1...Qxf3
        • 2.Sb5+
          • 2...Ke4
            • 3.S7d6#
      • 1...Qxg8
        • 2.Sb5+
          • 2...Kc4
            • 3.S7d6#
      • 1...Sxf3
        • 2.Sb5+
          • 2...Kc4
            • 3.S7d6#
          • 2...Ke4
            • 3.Qh7#
            • 3.Qg6#
      • 1...Qb3
        • 2.Sc6+
          • 2...Kc3
            • 3.Qxb3#
        • 2.Qxb3
          • threat
            • 3.Sb5#
            • 3.Sc6#
            • 3.Qd3#
      • 1...Qc6
        • 2.Sxc6+
          • 2...Kc3
            • 3.Qb3#
      • 1...Qe6
        • 2.Sb5+
          • 2...Kc4
            • 3.S7d6#
      • 1...Qf7
        • 2.Sb5+
          • 2...Kc4
            • 3.S7d6#
      • 1...Qd7
        • 2.Qb3
          • threat
            • 3.Qd3#
          • 2...Qb5
            • 3.Sxb5#
          • 2...Qf5
            • 3.Sb5#
            • 3.Sc6#
          • 2...Qh7
            • 3.Sb5#
            • 3.Sc6#
          • 2...c4
            • 3.Qe3#
      • 1...Sf5
        • 2.Sb5+
          • 2...Kc4
            • 3.Be2#
      • 1...Sc8
        • 2.Sb5+
          • 2...Kc4
            • 3.Be2#
        • 2.Qxd5+
          • 2...Kc3
            • 3.Sb5#
            • 3.Qd3#
            • 3.Qxc5#
      • 1...c4
        • 2.Qxd5+
          • 2...Kc3
            • 3.Sb5#
            • 3.Qd2#
          • 2...Sxd5
            • 3.Sb5#
      • 1...Qc4!

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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).