MESON Chess Problem Database

Problem Display
PID: 45015 (B1NR4/1R1P4/2N1p1Q1/3k1nn1/1K3PP1/4p3/4P3/8 w - - 0 1)

Laws, Benjamin Glover

Source?, 0000

B1NR4/1R1P4/2N1p1Q1/3k1nn1/1K3PP1/4p3/4P3/8

#2

11 + 5

3316 Chess Problem Text Book 1887

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Ra7#
    • 1...Sg3
      • 2.Rb5#
    • 1...Sd4
      • 2.S6e7#
    • 1...Sh4
      • 2.Rb5#
    • 1...Sd6
      • 2.S8e7#
    • 1...Sh6
      • 2.Rb5#
    • 1...Se7
      • 2.Rb5#
    • 1...Sg7
      • 2.Rb5#
  • Tries
    • 1.Qxf5+?
      • 1...Kxc6
        • 2.Ra7#
        • 2.Qb5#
        • 2.Qc5#
      • 1...e5
        • 2.Rb5#
      • 1...exf5!
  • Keys
    • 1.Re8!
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kxc6
        • 2.Ra7#
      • 1...Sf3
        • 2.Qxe6#
      • 1...Sg3
        • 2.Rb5#
      • 1...Sd4
        • 2.S6e7#
      • 1...Sh4
        • 2.Rb5#
      • 1...Sd6
        • 2.S8e7#
      • 1...Sh6
        • 2.Rb5#
      • 1...Se7
        • 2.Rb5#
      • 1...Sg7
        • 2.Rb5#
      • 1...Sh3
        • 2.Qxe6#
      • 1...Se4
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qxe6#
      • 1...Sh7
        • 2.Qxe6#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P_SPINP(e),S_FLIGHT,XS(E)::B(I)+R(G)
    • S(c);::R(G)
    • S(c);N_GUARD,SBLOCK::S(E)
    • S(c);N_GUARD,SBLOCK::S(J)
  • Tries
    • Try
      • Q(F);CHECK,XS(c)
      • Vars
        • P(e);P_SPINP(e)::R(G)
      • Refutation
        • P(e);XQ(F)
  • Actual
    • R(K);
    • Vars
      • K(b);P_SPINP(e),P_SPINS(c),S_FLIGHT::QAB1(F),XS(c)
      • K(b);OGATEB,P_SPINP(e),S_FLIGHT,XS(E)::B(I)+R(G)
      • S(d);N_GUARD::QAB1(F),XP(e)
      • S(c);::R(G)
      • S(c);N_GUARD,SBLOCK::S(E)
      • S(c);N_GUARD,SBLOCK::S(J)
      • P(e);OGATE::R1(K),XP(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).