MESON Chess Problem Database

Problem Display
PID: 177433 (8/4p2K/4Q1pn/1P1NpN2/1p2k2p/4P2P/4P3/8 w - - 0 1)

Hoffmann, Fritz

Probleemblad, 1978

8/4p2K/4Q1pn/1P1NpN2/1p2k2p/4P2P/4P3/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Sc3#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Sdxe7#
      • 1...Kxf5
        • 2.Qxg6#
      • 1...gxf5
        • 2.Qc4#
      • 1...e6
        • 2.Sde7#
        • 2.Sd6#
      • 1...Sxf5!
  • Keys
    • 1.Qxg6!
      • 1...Kxd5
        • 2.Qc6#
      • 1...Sxf5
        • 2.Qg2#
      • 1...Sg4
        • 2.Sfxe7#
      • 1...Sf7
        • 2.Sfxe7#
      • 1...Sg8
        • 2.Sfxe7#
      • 1...b3
        • 2.Sc3#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::S(E)
  • Tries
    • Try
      • Q(G);N_PINP(d)
      • Threat
        • QAB(G)+S(E),XP(g)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(F)::QAB1(G),XP(e)
        • P(e);SBLOCK,XS(F)::QAR2(G)
      • Refutation
        • S(f);XS(F)
  • Actual
    • Q(G);N_PINP(d),XP(e)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
      • S(f);P_SPINS(f),SBLOCK,XS(F)::QAB(G)
      • S(f);N_GUARD::QAB(G)+S(F),XP(g)
      • P(a);N_GUARD::S(E)
      • P(g);N_GUARD::S(E)
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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).