Problem Display
PID: 187628 (2N5/2rk4/8/4PP2/1K6/8/8/Q7 w - - 0 1)

White, Alain Campbell

British Chess Magazine, 1909

2N5/2rk4/8/4PP2/1K6/8/8/Q7

#2

5 + 2


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Keys
    • 1.e6+!
      • 1...Kc6
        • 2.Qh1#
      • 1...Kxc8
        • 2.Qa8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Ke8
        • 2.Qh8#

This is a version of 187625

FEATURES


  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • P(C);CHECK
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT,XS(E)::QAR2(A)
      • K(b);P-FLIGHT::QAR(A)
      • K(b);S_FLIGHT::QAR(A)


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).