MESON Chess Problem Database

Problem Display
PID: 186812 (1R4BB/6r1/Np3N2/8/6p1/8/2p3r1/k1K2R2 w - - 0 1)

Armeni, Alberto

Problem Observer, 2018

1R4BB/6r1/Np3N2/8/6p1/8/2p3r1/k1K2R2

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Kxc2#
    • 1...Ra7
      • 2.Sd7#
    • 1...Rb7
      • 2.Sd7#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Rh7
      • 2.Sxh7#
  • Keys
    • 1.Ra8!
      • threat
        • 2.Sc7#
      • 1...Rxg8
        • 2.Sb8#
      • 1...Rg3
        • 2.Kxc2#
      • 1...Rg5
        • 2.Sc5#
      • 1...Ra7
        • 2.Sd7#
      • 1...Rb7
        • 2.Sd7#
      • 1...Rc7
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);::R(B)+K(A),XP(b)
    • R(f);::B(G)+S(D)
    • R(f);::B(G)+S(D),XR(f)
  • Actual
    • R(E);
    • Threat
      • R(E)+S(C)
    • Vars
      • R(f);N_GUARD,XB(F)::R(E)+S(C)
      • R(c);::R(B)+K(A),XP(b)
      • R(f);N_GUARD::R(E)+S(C)
      • R(f);::B(G)+S(D)
      • R(f);::R(E)+S(C),XR(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).