Problem Display
PID: 188610 (8/8/8/K1PR1R2/1PkPb3/5P2/2pPP1B1/2N5 w - - 0 1)

Hansen, Erik

Problemskak, 2018

8/8/8/K1PR1R2/1PkPb3/5P2/2pPP1B1/2N5

#2

11 + 3


SOLUTION


  • SOUND
  • Sets
    • 1...Bd3
      • 2.exd3#
  • Keys
    • 1.Bf1!
      • 1...Bxf3
        • 2.exf3#
      • 1...Bxd5
        • 2.e3#
      • 1...Bxf5
        • 2.e4#
      • 1...Bd3
        • 2.exd3#

This is after

After H. van Beek, 1921.

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE::P(C),XB(c)
  • Actual
    • B(D);
    • Vars
      • B(c);OGATE,XP(E)::B(D)+P(C),XB(c)
      • B(c);N_GUARD,XR(J)::B(D)+P(C)
      • B(c);OGATE,XR(K)::B(D)+P(C)
      • B(c);OGATE::P(C),XB(c)


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).