Problem Display
PID: 40285 (6b1/4Np1N/4pP1k/8/4Qp1p/1K6/6P1/4b3 w - - 0 1)

von Wardener, Friedrich Freiherr

Offiziers Schachzeitung, 1904

6b1/4Np1N/4pP1k/8/4Qp1p/1K6/6P1/4b3

#2

6 + 7


119 Tidskrift for Schack 1909
3360 Simple Two-move Themes 1924

SOLUTION


  • SOUND
  • Tries
    • 1.Qxe1?
      • threat
        • 2.Qxh4#
      • 1...Kxh7
        • 2.Qxh4#
      • 1...h3
        • 2.Qh4#
      • 1...Kh5!
    • 1.Qxf4+?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kxh7!
  • Keys
    • 1.g4!
      • threat
        • 2.Sxg8#
      • 1...Bxh7
        • 2.Qxf4#
      • 1...fxg4 ep
        • 2.Qxh4#
      • 1...hxg4 ep
        • 2.Qh1#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);XB(a)
      • Threat
        • QAR2(C),XP(c)
      • Vars
        • K(e);P-FLIGHT,XS(F)::QAR(C),XP(c)
        • P(c);::QAR2(C)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • K(e);P-FLIGHT::QAR1(C)
      • Refutation
        • K(e);P-FLIGHT,XS(F)
  • Actual
    • P(A);
    • Threat
      • S(E),XB(g)
    • Vars
      • B(g);SBLOCK,XS(F)::QAB(C),XP(b)
      • P(b);EP,OGATE,XP(A)::QAR2(C),XP(c)
      • P(c);EP,OGATEB,XP(A)::QAR(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).