MESON Chess Problem Database

Problem Display
PID: 43257 (rk2K1n1/1PR1p2R/3p1p1p/1N3p1P/5B2/5P2/1Q6/8 w - - 0 1)

Ilyasov, Stanislav Alekseevich

Probleemblad, 2002

rk2K1n1/1PR1p2R/3p1p1p/1N3p1P/5B2/5P2/1Q6/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Rcxe7#
    • 1...e5
      • 2.Rc8#
    • 1...e6
      • 2.Rc8#
  • Tries
    • 1.Bxd6?
      • threat
        • 2.Rcxe7#
      • 1...exd6
        • 2.Rc8#
      • 1...e5
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rcd7#
        • 2.Rce7#
        • 2.Rcf7#
        • 2.Rcg7#
        • 2.Rc8#
      • 1...e6
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rcd7#
        • 2.Rce7#
        • 2.Rcf7#
        • 2.Rcg7#
        • 2.Rc8#
      • 1...Ra6!
  • Keys
    • 1.Sa7!
      • 1...Kxa7+
        • 2.b8S#
      • 1...Kxc7+
        • 2.bxa8S#
      • 1...Rxa7
        • 2.Rc8#
      • 1...d5
        • 2.Sc6#
      • 1...e5
        • 2.Sc6#
      • 1...e6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::B(C)+R(G),XP(e)
    • P(e);::R1(G)
  • Tries
    • Try
      • B(C);XP(b)
      • Threat
        • B(C)+R(G),XP(e)
      • Vars
        • P(e);XB(C)::R1(G)
      • Refutation
        • R(f);
  • Actual
    • S(D);
    • Vars
      • K(g);CHECK,OGATE,S_FLIGHT,XS(D)::P=S
      • K(g);CHECK,P_SPINP(b),S_FLIGHT,XR(G)::PXR(f)=S
      • R(f);SBLOCK,XS(D)::R1(G)
      • P(b);::S(D)
      • P(e);::S(D)
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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).