Problem Display
PID: 47235 (5nBb/3b2Q1/5r2/7R/3k3n/K7/2P5/4R3 w - - 0 1)

Hartong, Jan

Good Companions (October), 1915

5nBb/3b2Q1/5r2/7R/3k3n/K7/2P5/4R3

#2

6 + 6


3132 The Good Companion Two-Mover 1922
20 De Problemist 1931
5066 Classic Chess Problems by Pioneer Composers 1970
3310 2345 Chess Problems 1997
5454 Near Snap 2021

SOLUTION


  • SOUND
  • Keys
    • 1.Kb4!
      • threat
        • 2.Rd5#
      • 1...Bf5
        • 2.Qg1#
      • 1...Bc6
        • 2.Qa7#
      • 1...Be6
        • 2.Qa7#
      • 1...Sf5
        • 2.Qg4#
      • 1...Se6
        • 2.Qxd7#

This anticipates 158641(1933)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • R1(D)
    • Vars
      • B(d);::QAB(E)
      • B(d);OGATE::QAB(E)
      • S(b);S_CUTB(d)::QAR(E)
      • S(e);N_GUARD::QAR(E),XB(d)


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).