MESON Chess Problem Database

Problem Display
PID: 199690 (b2r4/Bn1B4/nR2P3/p1k3p1/3p1N2/3Pp3/8/6KR w - - 0 1)

Cheylan, Yves

Suomen Shakki, 1989

b2r4/Bn1B4/nR2P3/p1k3p1/3p1N2/3Pp3/8/6KR

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Ra6#
    • 1...Sd6
      • 2.Rb1#
      • 2.Rb2#
      • 2.Rb3#
      • 2.Rb5#
      • 2.Rb7#
      • 2.Rb8#
    • 1...gxf4
      • 2.Rh5#
    • 1...g4
      • 2.Rh5#
  • Tries
    • 1.Rh2?
      • threat
        • 2.Rc2#
      • 1...gxf4
        • 2.Rh5#
      • 1...Sb4
        • 2.Ra6#
      • 1...Sd6
        • 2.Rb1#
        • 2.Rbb2#
        • 2.Rb3#
        • 2.Rb5#
        • 2.Rb7#
        • 2.Rb8#
      • 1...e2!
  • Keys
    • 1.Kg2!
      • threat
        • 2.Rc1#
      • 1...Sd6+
        • 2.Rb7#
      • 1...gxf4
        • 2.Rh5#
      • 1...Sb4
        • 2.Ra6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(f);SBLOCK::B(G)+R(E)
    • P(e);OGATEB,XS(D)::R(B)
    • P(e);OGATEB::R(B)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(e);OGATEB,XS(D)::R(B)
        • S(f);SBLOCK::B(G)+R(E)
      • Refutation
        • P(a);
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • R(B)
    • Vars
      • S(g);CHECK,SBLOCK::B(G)+R(E)
      • P(e);OGATEB,XS(D)::R(B)
      • S(f);SBLOCK::B(G)+R(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).