MESON Chess Problem Database

Problem Display
PID: 138904 (3Rb3/1pr2pK1/5Rp1/N3k1N1/8/2P1P1P1/5r2/1B6 w - - 0 1)

Cox, C

The Problemist, 1936

3Rb3/1pr2pK1/5Rp1/N3k1N1/8/2P1P1P1/5r2/1B6

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sf3#
    • 1...Rb2
      • 2.Sf3#
    • 1...Rd2
      • 2.Sf3#
    • 1...Re2
      • 2.Sf3#
    • 1...Rg2
      • 2.Sf3#
    • 1...Rh2
      • 2.Sf3#
    • 1...Rf3
      • 2.Sxf3#
    • 1...Rf4
      • 2.exf4#
      • 2.gxf4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Re7
      • 2.Sc4#
    • 1...Bc6
      • 2.Sc4#
  • Keys
    • 1.e4!
      • threat
        • 2.Rd5#
      • 1...Rd2
        • 2.Sf3#
      • 1...Rc5
        • 2.Rxe8#
      • 1...Rd7
        • 2.Sc4#
      • 1...Bc6
        • 2.Sc4#
      • 1...Bd7
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(F)
    • R(a);N_GUARD::S(F),XR(a)
    • R(e);N_GUARD::S(E),XR(e)
    • R(e);N_GUARD::S(E)
    • B(g);S_CUTR(e)::S(E)
  • Actual
    • P(C);
    • Threat
      • R1(I)
    • Vars
      • R(a);N_GUARD::S(F)
      • R(e);N_GUARD::R(I),XB(g)
      • R(e);N_GUARD::S(E)
      • B(g);S_CUTR(e)::S(E)
      • B(g);N_GUARD,S_CUTR(e)::S(F),XP(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).