MESON Chess Problem Database

Problem Display
PID: 57581 (5N2/3p3p/3p4/4pp2/5k1P/4pP2/2Q3K1/8 w - - 0 1)

Fastosky, Pedro

Chess Life, 1957

5N2/3p3p/3p4/4pp2/5k1P/4pP2/2Q3K1/8

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Qc1#
      • 2.Qd2#
    • 1...h5
      • 2.Sg6#
    • 1...h6
      • 2.Sg6#
  • Tries
    • 1.Qd1?
      • 1...e2
        • 2.Qc1#
        • 2.Qd2#
      • 1...e4
        • 2.Qxd6#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#
      • 1...d5!
    • 1.Qd3?
      • 1...e4
        • 2.Qxd6#
      • 1...e2
        • 2.Qd2#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#
      • 1...d5!
    • 1.Qc7?
      • 1...e2
        • 2.Qc1#
      • 1...e4
        • 2.Qxd6#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#
      • 1...d5!
  • Keys
    • 1.Qc6!
      • 1...dxc6
        • 2.Se6#
      • 1...e2
        • 2.Qc1#
      • 1...e4
        • 2.Qxd6#
      • 1...d5
        • 2.Qh6#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD::S(E)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A),XP(e)
        • P(g);N_GUARD::S(E)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A),XP(e)
        • P(a);OGATEB::QAB(A)
        • P(g);N_GUARD::S(E)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Vars
        • P(a);OGATEB::QAB(A)
        • P(c);OGATEB,P_SPINP(e)::QAB(A),XP(e)
        • P(g);N_GUARD::S(E)
      • Refutation
        • P(e);P_SPINP(c)
  • Actual
    • Q(A);
    • Vars
      • P(f);N_GUARD,XQ(A)::S(E)
      • P(a);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A),XP(e)
      • P(e);OGATE::QAB(A)
      • 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).