Problem Display
PID: 216429 (8/2R4p/4p2r/1pNP2Q1/3k4/1K5p/8/8 w - - 0 1)

Hulsen, Bernhard

Deutsche Schachzeitung, 1885

8/2R4p/4p2r/1pNP2Q1/3k4/1K5p/8/8

#2

5 + 6


15148 Sadier Collection 2020

SOLUTION


  • SOUND
  • Sets
    • 1...exd5
      • 2.Qf4#
    • 1...e5
      • 2.Qd2#
  • Keys
    • 1.Rd7!
      • threat
        • 2.dxe6#
      • 1...Kxc5
        • 2.Qe3#
        • 2.Qg1#
      • 1...exd5
        • 2.Rxd5#
      • 1...e5
        • 2.Qg1#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK,XP(C)::QAR2(D)
    • P(d);SBLOCK::QAR2(D)
  • Actual
    • R(E);
    • Threat
      • R(E)+P(C),XP(d)
    • Vars
      • P(d);OGATE,P_SPINP(d),XP(C)::R1(E),XP(d)
      • P(d);SBLOCK::QAB(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).