MESON Chess Problem Database

Problem Display
PID: 231590 (8/Np2K2n/2b1p3/3pk2p/3p4/3B4/7N/5Qn1 w - - 0 1)

Fleischer, Gyula

Ujsag, 1927

8/Np2K2n/2b1p3/3pk2p/3p4/3B4/7N/5Qn1

#2

5 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sf8
      • 2.Qf6#
    • 1...h4
      • 2.Sg4#
    • 1...b5
      • 2.Sxc6#
    • 1...b6
      • 2.Sxc6#
  • Keys
    • 1.Qc1!
      • 1...Ba4
        • 2.Qc7#
      • 1...Bb5
        • 2.Qc7#
      • 1...Bd7
        • 2.Qc7#
      • 1...Be8
        • 2.Qc7#
      • 1...Se2
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sh3
        • 2.Sf3#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qg5#
      • 1...Sf8
        • 2.Qg5#
      • 1...h4
        • 2.Sg4#
      • 1...b5
        • 2.Sxc6#
      • 1...b6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD::QAB1(A)
    • S(i);N_GUARD::QAB1(A),XS(i)
    • P(e);N_GUARD::S(B)
    • P(h);N_GUARD::S(D),XB(f)
  • Actual
    • Q(A);
    • Vars
      • B(f);OGATE::QAB(A)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
      • S(i);N_GUARD::QAR2(A),XS(i)
      • S(i);N_GUARD::QAR2(A)
      • P(e);N_GUARD::S(B)
      • P(h);N_GUARD::S(D),XB(f)
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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).