MESON Chess Problem Database

Problem Display
PID: 190216 (8/2K5/1pN5/2kp4/n7/2p5/1rnP4/2Q2B2 w - - 0 1)

Lobel, Emil

Dresdner Volkszeitung, 1913

8/2K5/1pN5/2kp4/n7/2p5/1rnP4/2Q2B2

#2

5 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.d4#
    • 1...Se1
      • 2.d4#
    • 1...Sa3
      • 2.d4#
    • 1...Se3
      • 2.d4#
    • 1...Sb4
      • 2.d4#
  • Tries
    • 1.Qxc2?
      • threat
        • 2.d4#
      • 1...d4
        • 2.Qf5#
      • 1...Rb4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe7#
      • 1...Sxe1
        • 2.d4#
      • 1...d4
        • 2.Qe5#
      • 1...Se3
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD,P_SPINP(c)::P(C)
  • Tries
    • Try
      • Q(A);P_PINP(c),XS(b)
      • Threat
        • P(C)
      • Vars
        • P(f);OGATEB::QAR(A)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(b);N_GUARD,XQ(A)::P(C)
      • P(f);OGATEB::QAR2(A)
      • S(b);N_GUARD::P(C)
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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).