MESON Chess Problem Database

Problem Display
PID: 95549 (4q3/5p2/3P4/1nP1kP2/1P2N3/1PN2R2/1Q6/4K3 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Duna Zeitung, 1907

4q3/5p2/3P4/1nP1kP2/1P2N3/1PN2R2/1Q6/4K3

#2

10 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Qh2#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sxb5#
      • 1...Kd4+
        • 2.Se2#
      • 1...Kxf6+
        • 2.Se4#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sxd6
        • 2.Sb1#
        • 2.Sd1#
        • 2.Sa2#
        • 2.Se2#
        • 2.Sa4#
        • 2.Sce4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Sa3
        • 2.Sb1#
        • 2.Sd1#
        • 2.Sa2#
        • 2.Se2#
        • 2.Sa4#
        • 2.Sce4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Sd4
        • 2.Sg4#
      • 1...Sa7
        • 2.Sb1#
        • 2.Sd1#
        • 2.Sa2#
        • 2.Se2#
        • 2.Sa4#
        • 2.Sce4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Sc7
        • 2.Sb1#
        • 2.Sd1#
        • 2.Sa2#
        • 2.Se2#
        • 2.Sa4#
        • 2.Sce4#
        • 2.Sb5#
        • 2.Scd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::QAB(B)
  • Actual
    • S(G);
    • Threat
      • QAB(B)+S(D),XS(a)
    • Vars
      • K(b);CHECK,S_FLIGHT::QAB(B)+S(D),DCHECK
      • K(b);CHECK,S_FLIGHT,XS(G)::QAB(B)+S(D),DCHECK
      • S(a);OGATE,P_SPINS(a),XS(D)::QAB(B),XS(a)
      • S(a);SBLOCK::S(G)
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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).