MESON Chess Problem Database

Problem Display
PID: 89924 (nK2b1n1/1ppk1p2/2N3p1/8/2RN4/B5R1/3pQ2q/8 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 1982

nK2b1n1/1ppk1p2/2N3p1/8/2RN4/B5R1/3pQ2q/8

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qe7#
    • 1...Sh6
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...f5
      • 2.Qe6#
    • 1...f6
      • 2.Qe6#
  • Keys
    • 1.Se6!
      • threat
        • 2.Sf8#
      • 1...bxc6
        • 2.Rd4#
      • 1...fxe6
        • 2.Qd3#
      • 1...Qh6
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(j);N_GUARD::QAR1(A)
    • S(j);N_GUARD::QAR1(A),XS(j)
    • P(g);N_GUARD::QAB1(A)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(d);SBLOCK,XS(F)::R(D)
      • P(g);SBLOCK,XS(E)::QAR(A)
      • Q(b);N_GUARD::R(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).