MESON Chess Problem Database

Problem Display
PID: 15508 (8/2BknK2/B7/PNR5/8/8/8/8 w - - 0 1)

Rychkov, Vladimir Nikolaevich

3/4 Place, USSR Championship, 1984-1985

8/2BknK2/B7/PNR5/8/8/8/8

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Rd5#
  • Tries
    • 1.Sd6?
      • 1...Sd5
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sf5
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sg6
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sc8
        • 2.Bb5#
        • 2.Bxc8#
      • 1...Sg8
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sc6!
    • 1.Sa7?
      • 1...Sd5
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sf5
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sg6
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sc8
        • 2.Bb5#
        • 2.Bxc8#
      • 1...Sg8
        • 2.Bb5#
        • 2.Bc8#
      • 1...Sc6!
    • 1.Bb7?
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sg6
        • 2.Rd5#
      • 1...Sc8
        • 2.Bc6#
      • 1...Sg8
        • 2.Rd5#
      • 1...Sf5!
  • Keys
    • 1.Bb6!
      • 1...Sd5
        • 2.Bc8#
      • 1...Sf5
        • 2.Bc8#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sg6
        • 2.Bc8#
      • 1...Sc8
        • 2.Bxc8#
      • 1...Sg8
        • 2.Bc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,SBLOCK::R(C)
  • Tries
    • Try
      • S(B);
      • Refutation
        • S(b);
    • Try
      • S(B);
      • Refutation
        • S(b);
    • Try
      • B(D);
      • Vars
        • S(b);N_GUARD::R(C),XS(b)
        • S(b);N_GUARD::R(C)
        • S(b);N_GUARD,SBLOCK::B(D)
      • Refutation
        • S(b);
  • Actual
    • B(E);
    • Vars
      • S(b);N_GUARD::B(D)
      • S(b);N_GUARD,SBLOCK::R(C)
      • S(b);N_GUARD::B(D),XS(b)
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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).