MESON Chess Problem Database

Problem Display
PID: 17664 (6N1/2Q5/4pb2/2pknr1r/4n3/1PP4N/4p1R1/K2b2BB w - - 0 1)

Hassberg, Hilde A

3rd Prize, Parallele 50 TT, 1948

6N1/2Q5/4pb2/2pknr1r/4n3/1PP4N/4p1R1/K2b2BB

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Sxf4#
    • 1...Rfg5
      • 2.Sf4#
    • 1...Be7
      • 2.Sxe7#
    • 1...Bg7
      • 2.Se7#
    • 1...Bh8
      • 2.Se7#
  • Keys
    • 1.Rg5!
      • threat
        • 2.Qxc5#
      • 1...Rf3
        • 2.c4#
      • 1...Rf2
        • 2.Qd7#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sd3
        • 2.Sxf6#
      • 1...Sf3
        • 2.Sf4#
      • 1...Sc6
        • 2.Sf4#
        • 2.Sxf6#
      • 1...Sd7
        • 2.Sf4#
      • 1...c4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::S(G),XR(g)
    • R(g);N_GUARD::S(G)
    • B(j);N_GUARD::S(I),XB(j)
    • B(j);N_GUARD::S(I)
  • Actual
    • R(D);P_PINS(c)
    • Threat
      • QAR1(H),XP(d)
    • Vars
      • R(g);N_SPINS(c),P_SPINS(f)::P(F)
      • R(g);S_CUTS(f)::QAR2(H)
      • B(j);N_GUARD::S(I),XB(j)
      • S(f);P_PINP(F),P_SPINR(g)::S(I),XB(j)
      • S(f);N_SPINS(c),P_PINP(F),P_SPINR(g)::S(G)
      • S(f);P_PINP(F),P_SPINR(g)::S(G)
      • P(d);::QAR1(H)
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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).