Problem Display
PID: 211430 (8/1P6/8/ppp5/1k6/1B6/1K6/8 w - - 0 1)

Limbach, Saturnin

Land og Folk, 1975

8/1P6/8/ppp5/1k6/1B6/1K6/8

#2

3 + 4


15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION


  • SOUND
  • Tries
    • 1.b8Q?
      • 1...c4
        • 2.Qd6#
        • 2.Qf8#
      • 1...a4!
    • 1.b8B?
      • 1...c4
        • 2.Bd6#
      • 1...a4!
  • Keys
    • 1.b8S!
      • threat
        • 2.Sa6#
        • 2.Sc6#
      • 1...a4
        • 2.Sc6#
      • 1...c4
        • 2.Sa6#

This anticipates 124301(1989)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);P_PINP(c)
      • Refutation
        • P(b);
    • Try
      • P(C);
      • Vars
        • P(d);OGATEB::B(C)
      • Refutation
        • P(b);
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);::S(C)
      • P(d);::S(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).