MESON Chess Problem Database

Problem Display
PID: 193798 (bq2n2Q/4p3/1p4R1/7p/4pp1k/8/6P1/1K4N1 w - - 0 1)

Leopold, Dr Rudolf L

Deutsche Schachzeitung, 1916

bq2n2Q/4p3/1p4R1/7p/4pp1k/8/6P1/1K4N1

#2

5 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qe1#
        • 2.Qh3#
      • 1...Qc8
        • 2.Qe1#
      • 1...e3
        • 2.Qe1#
      • 1...f3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qf2#
      • 1...e3
        • 2.g3#
      • 1...f3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);N_PINP(d)
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);::QAB(E)
        • P(a);::QAB(E)
      • Refutation
        • P(b);
  • Actual
    • Q(E);N_PINP(d)
    • Threat
      • QAB(E)
    • Vars
      • P(a);P_SPINP(b)::P(C)
      • P(b);P_SPINP(a)::S(B),XP(b)
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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).