Problem Display
PID: 112896 (8/p1B5/k1pKBQ2/1qp5/p7/3p4/6p1/8 w - - 0 1)

Fossum, Andre Ferdinand

1st Prize, 01. All Round Ty., 1950

8/p1B5/k1pKBQ2/1qp5/p7/3p4/6p1/8

#3

4 + 8


17122 Sjakkoppgaver og Studier av Andre Fossum 1975
17117 Bindningsproblem med modellmatter (Froberg) 1983
6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qxb2
        • threat
          • 3.Bc4#
          • 3.Bc8#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qc8+
          • 2...Qb7
            • 3.Bc4#
      • 1...Qc4
        • 2.Bxc4+
          • 2...Kb7
            • 3.Qb8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
      • 1...Qb1
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb2
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb3
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb4
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qa5
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
      • 1...Qb8
        • 2.Bc4+
          • 2...Kb7
            • 3.Qxb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qxb8
          • threat
            • 3.Bc4#
            • 3.Bc8#
      • 1...Qb7
        • 2.Bc4+
          • 2...Qb5
            • 3.Qc8#
      • 1...c4
        • 2.Qc8+
          • 2...Qb7
            • 3.Bxc4#
      • 1...Qb6!
    • 1.Qf8?
      • threat
        • 2.Qc8+
          • 2...Qb7
            • 3.Bc4#
      • 1...Qc4
        • 2.Bxc4+
          • 2...Kb7
            • 3.Qb8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
      • 1...Qb1
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb2
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb3
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb4
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qa5
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
      • 1...Qb8
        • 2.Bc4+
          • 2...Kb7
            • 3.Qxb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qxb8
          • threat
            • 3.Bc4#
            • 3.Bc8#
      • 1...Qb7
        • 2.Bc4+
          • 2...Qb5
            • 3.Qc8#
      • 1...c4
        • 2.Qc8+
          • 2...Qb7
            • 3.Bxc4#
      • 1...Qb6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qc8+
          • 2...Qb7
            • 3.Bc4#
      • 1...Qc4
        • 2.Bxc4+
          • 2...Kb7
            • 3.Qb8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
      • 1...Qb1
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb2
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qxb2
          • threat
            • 3.Bc4#
            • 3.Bc8#
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb3
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qb4
        • 2.Qc8+
          • 2...Kb5
            • 3.Qb7#
          • 2...Qb7
            • 3.Bc4#
      • 1...Qa5
        • 2.Bc4+
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
      • 1...Qb6
        • 2.Bc4+
          • 2...Ka5
            • 3.Qc3#
          • 2...Kb7
            • 3.Qb8#
          • 2...Qb5
            • 3.Qc8#
      • 1...Qb8
        • 2.Bc4+
          • 2...Kb7
            • 3.Qxb8#
          • 2...Qb5
            • 3.Qc8#
        • 2.Qxb8
          • threat
            • 3.Bc4#
            • 3.Bc8#
      • 1...Qb7
        • 2.Bc4+
          • 2...Qb5
            • 3.Qc8#
      • 1...c4
        • 2.Qc8+
          • 2...Qb7
            • 3.Bxc4#

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