MESON Chess Problem Database

Problem Display
PID: 232780 (1B5Q/8/8/2kn1nR1/2NN4/3P4/3K4/8 w - - 0 1)

Hoy, Paul

Freie Presse, 1976

1B5Q/8/8/2kn1nR1/2NN4/3P4/3K4/8

#2

7 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Bd6#
    • 1...Sg3
      • 2.Bd6#
    • 1...Sh4
      • 2.Bd6#
    • 1...Sd6
      • 2.Bxd6#
    • 1...Sh6
      • 2.Bd6#
    • 1...Se7
      • 2.Bd6#
  • Keys
    • 1.Qd8!
      • 1...Kb4
        • 2.Qa5#
      • 1...Kxd4
        • 2.Ba7#
      • 1...Sxd4
        • 2.Qb6#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sde3
        • 2.Qd6#
      • 1...Sb4
        • 2.Ba7#
        • 2.Qd6#
      • 1...Sf4
        • 2.Qd6#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sf6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...Sde7
        • 2.Qd6#
      • 1...Sfe3
        • 2.Qb6#
      • 1...Sg3
        • 2.Qb6#
      • 1...Sh4
        • 2.Qb6#
      • 1...Sd6
        • 2.Qb6#
      • 1...Sh6
        • 2.Qb6#
      • 1...Sfe7
        • 2.Qb6#
      • 1...Sg7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,P_SPINS(b)::B(F)
    • S(c);N_GUARD,P_SPINS(b)::B(F),XS(c)
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAB1(G)
      • K(a);P_SPINS(b),S_FLIGHT,XS(D)::B(F)
      • S(c);P_SPINS(b),SBLOCK,XS(D)::QAB1(G)
      • S(b);P_SPINS(c)::QAB1(G)
      • S(c);P_SPINS(b)::QAB1(G)
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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).