Problem Display
PID: 189998 (6b1/3Pb3/7r/Q6p/2k1P3/1p3P2/1B6/4NK2 w - - 0 1)

Leopold, Dr Rudolf L

Deutsche Schachzeitung, 1913

6b1/3Pb3/7r/Q6p/2k1P3/1p3P2/1B6/4NK2

#2

7 + 6


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Tries
    • 1.Qa6+?
      • 1...Kb4
        • 2.Sd3#
      • 1...Kc5
        • 2.Sd3#
      • 1...Rxa6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Se5#
      • 1...Kxd3
        • 2.Qc3#
      • 1...Re6
        • 2.Qd5#
      • 1...Bd6
        • 2.Qa6#
      • 1...Bf6
        • 2.Qa6#

This is a version of 119889

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::S(A)
      • Refutation
        • R(d);XQ(F)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(b);S_FLIGHT,XS(A)::QAR1(F)
      • R(d);S_CUTB(f)::QAB1(F)
      • B(e);S_CUTR(d)::QAB(F)


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).