Problem Display
PID: 24121 (5R2/4p1p1/8/8/5P2/8/7Q/3K1k2 w - - 0 1)

Siotis, Nikos

Canadian Chess Chat, 1982

5R2/4p1p1/8/8/5P2/8/7Q/3K1k2

#2

4 + 3


2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2013

SOLUTION


  • SOUND
  • Sets
    • 1...e5
      • 2.fxe5#
    • 1...g5
      • 2.fxg5#
  • Keys
    • 1.f5!
      • 1...e6
        • 2.fxe6#
      • 1...e5
        • 2.fxe5 ep#
      • 1...g5
        • 2.fxg5 ep#
      • 1...g6
        • 2.fxg6#

Anticipated by 87549(1961)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::R(D)+P(C),XP(b)
    • P(c);OGATE::R(D)+P(C),XP(c)
  • Actual
    • P(C);
    • Vars
      • P(b);OGATE::R(D)+P(C),XP(b)
      • P(b);OGATE::R(D)+P(C),XP(b),EP
      • P(c);OGATE::R(D)+P(C),XP(c),EP
      • P(c);OGATE::R(D)+P(C),XP(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).