MESON Chess Problem Database

Problem Display
PID: 223350 (3B4/3R4/2pp4/2rk1P2/R1n2K2/8/8/3N4 w - - 0 1)

Klark, Dmitry Vasilevich

Shakhmatny Vestnik, 1886

3B4/3R4/2pp4/2rk1P2/R1n2K2/8/8/3N4

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Se3#
    • 1...Sd2
      • 2.Se3#
    • 1...Sa3
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sa5
      • 2.Se3#
    • 1...Se5
      • 2.Se3#
    • 1...Sb6
      • 2.Se3#
  • Tries
    • 1.Rxd6+?
      • 1...Sxd6
        • 2.Se3#
      • 1...Kxd6!
  • Keys
    • 1.Bb6!
      • 1...Kd4
        • 2.Rxd6#
      • 1...Sxb6
        • 2.Se3#
      • 1...Ra5
        • 2.Sc3#
      • 1...Rb5
        • 2.Sc3#
      • 1...Sb2
        • 2.Se3#
      • 1...Sd2
        • 2.Se3#
      • 1...Sa3
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sa5
        • 2.Se3#
      • 1...Se5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
  • Tries
    • Try
      • R(E);CHECK,XP(e)
      • Vars
        • S(a);SBLOCK,XR(E)::S(A)
      • Refutation
        • K(c);P-FLIGHT,XR(E)
  • Actual
    • B(F);
    • Vars
      • K(c);P-FLIGHT,P_SPINR(b),P_SPINS(a)::R(E),XP(e)
      • S(a);N_GUARD,XB(F)::S(A)
      • R(b);::S(A)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
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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).