MESON Chess Problem Database

Problem Display
PID: 208874 (8/2K5/8/3N1n1n/1PNpkPp1/3p2p1/3B2P1/3B4 w - - 0 1)

Klark, Dmitry Vasilevich

Shakhmatny Listok, 1876

8/2K5/8/3N1n1n/1PNpkPp1/3p2p1/3B2P1/3B4

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf4
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sg7
      • 2.Sf6#
  • Tries
    • 1.Kc6?
      • 1...Sxf4
        • 2.Sf6#
      • 1...Se3
        • 2.Sd6#
      • 1...Sh4
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sh6
        • 2.Sd6#
      • 1...Sfg7
        • 2.Sd6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Shg7
        • 2.Sf6#
      • 1...Se7+!
    • 1.Sd6+?
      • 1...Kxd5
        • 2.Bb3#
      • 1...Sxd6!
  • Keys
    • 1.Bb3!
      • 1...Kxd5
        • 2.Sd6#
      • 1...Sxf4
        • 2.Sf6#
      • 1...Se3
        • 2.Sd6#
      • 1...Sh4
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sh6
        • 2.Sd6#
      • 1...Se7
        • 2.Sd6#
      • 1...Sfg7
        • 2.Sd6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Shg7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD,XP(F)::S(G)
    • S(g);N_GUARD::S(G),XS(g)
    • S(g);N_GUARD::S(G)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • S(g);N_GUARD,XP(F)::S(G)
        • S(f);N_GUARD::S(E)
        • S(f);N_GUARD::S(E),XS(f)
        • S(g);N_GUARD::S(G),XS(g)
        • S(g);N_GUARD::S(G)
      • Refutation
        • S(f);CHECK
    • Try
      • S(E);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(G)::B(A)
      • Refutation
        • S(f);XS(E)
  • Actual
    • B(A);
    • Vars
      • K(d);S_FLIGHT,XS(G)::B(A)+S(E)
      • S(g);N_GUARD,XP(F)::S(G)
      • S(f);N_GUARD::S(E)
      • S(f);N_GUARD::S(E),XS(f)
      • S(g);N_GUARD::S(G),XS(g)
      • S(g);N_GUARD::S(G)
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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).