MESON Chess Problem Database

Problem Display
PID: 253638 (K4Qrq/5p2/4N1p1/RB4Pk/7p/5p1P/8/8 w - - 0 1)

Masanek, Erwin

Die Schwalbe, 1965

K4Qrq/5p2/4N1p1/RB4Pk/7p/5p1P/8/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Be2#
  • Keys
    • 1.Be8!
      • threat
        • 2.Sf4#
      • 1...fxe6
        • 2.Qxf3#
      • 1...Qd4
        • 2.Qh6#
      • 1...Qe5
        • 2.Qh6#
      • 1...Qf6
        • 2.Qh6#
      • 1...f5
        • 2.gxf5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::B(C)
  • Actual
    • B(C);N_SPINQ(G)
    • Threat
      • S(E)
    • Vars
      • P(e);OGATE,P_SPINP(d),XS(E)::QAB(G),XP(a)
      • Q(g);N_GUARD::QAR1(G)
      • P(e);OGATE,P_SPINP(d)::R(B)+P(D),XP(e),EP
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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).