MESON Chess Problem Database

Problem Display
PID: 142751 (6nK/pR3NNn/5kPp/r7/3P4/8/6R1/1B2r3 w - - 0 1)

Michel, Francois

diagrammes, 1973

6nK/pR3NNn/5kPp/r7/3P4/8/6R1/1B2r3

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rf2#
    • 1...Ra4
      • 2.Rf2#
    • 1...Ra6
      • 2.Rf2#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sxh7#
        • 2.Sh5#
        • 2.Rf7#
      • 1...Rxb1
        • 2.Se4#
        • 2.Sxh7#
      • 1...Rxg5
        • 2.Rf7#
      • 1...hxg5
        • 2.Rf7#
      • 1...Re4
        • 2.Sxe4#
        • 2.Sxh7#
      • 1...Rf5
        • 2.Sxh7#
      • 1...Rh1
        • 2.Se4#
        • 2.Sxh7#
        • 2.Se8#
        • 2.Rf7#
      • 1...Re7
        • 2.Sxh7#
        • 2.Sh5#
      • 1...Sf8
        • 2.Sh5#
        • 2.Rf7#
      • 1...Se7
        • 2.Sxh7#
        • 2.Sh5#
        • 2.Se8#
      • 1...h5
        • 2.Sxh7#
        • 2.Sxh5#
        • 2.Rf7#
      • 1...Sxg5!
    • 1.Sd8?
      • threat
        • 2.Rf7#
      • 1...Sg5
        • 2.Sh5#
      • 1...Se7
        • 2.Se8#
      • 1...Re7!
  • Keys
    • 1.Se5!
      • threat
        • 2.Rf7#
      • 1...Sg5
        • 2.Sg4#
      • 1...Se7
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::R(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);XS(F)::R1(E)
        • P(d);XS(F)::R1(E)
        • R(b);::S(F),XS(f)
      • Refutation
        • S(f);XS(F)
    • Try
      • S(F);
      • Threat
        • R1(E)
      • Vars
        • S(f);S_CUTR(b)::S(G)
        • S(g);S_CUTR(a)::S(G)
      • Refutation
        • R(a);
  • Actual
    • S(F);
    • Threat
      • R1(E)
    • Vars
      • S(f);SBLOCK::S(F)
      • S(g);SBLOCK::S(F)
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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).