MESON Chess Problem Database

Problem Display
PID: 107681 (3BK3/1P6/NrN1pQ2/1k6/8/pP6/P7/1n6 w - - 0 1)

Balslev, Ole

Stella Polaris, 1968

3BK3/1P6/NrN1pQ2/1k6/8/pP6/P7/1n6

#2

8 + 5

6490 yacpdb 2009
15422 Problemskak 2015

SOLUTION

  • SOUND
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxb6#
        • 2.Qa4#
        • 2.Qc4#
      • 1...Kxa6
        • 2.Qxb6#
      • 1...Kxc6
        • 2.Qd7#
      • 1...Rxa6
        • 2.Qc4#
      • 1...Rxc6
        • 2.Qa4#
      • 1...Rxb7
        • 2.Qa4#
        • 2.Qc4#
      • 1...Sc3
        • 2.Qxb6#
        • 2.Qc4#
      • 1...Sd2
        • 2.Qxb6#
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(E);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);S_FLIGHT,XS(C)::QAR1(E),XR(d)
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB1(E)
      • R(d);SBLOCK,XS(C)::QAB1(E)
      • R(d);SBLOCK,XS(D)::QAB1(E)
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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).