MESON Chess Problem Database

Problem Display
PID: 119776 (8/7P/4Qn2/5N1k/4N2p/8/8/5K2 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Shakhmatnoe obozrenie, 1909

8/7P/4Qn2/5N1k/4N2p/8/8/5K2

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Sg7#
      • 2.Qf7#
      • 2.Qe8#
    • 1...Sd5
      • 2.Sg7#
    • 1...Sd7
      • 2.Sg7#
    • 1...Sxh7
      • 2.Sg7#
    • 1...Sg8
      • 2.Sg7#
  • Tries
    • 1.h8Q+?
      • 1...Kg6
        • 2.Sxh4#
        • 2.Se7#
        • 2.Qexf6#
        • 2.Qh6#
      • 1...Sh7
        • 2.Sg7#
      • 1...Kg4!
    • 1.h8R+?
      • 1...Kg6
        • 2.Rh6#
        • 2.Qxf6#
      • 1...Sh7
        • 2.Sg7#
      • 1...Kg4!
  • Keys
    • 1.Se7!
      • 1...Kh6
        • 2.h8Q#
      • 1...Sxe4
        • 2.Qg6#
      • 1...Sxh7
        • 2.Qg6#
      • 1...h3
        • 2.Qxh3#
      • 1...Sg4
        • 2.Qg6#
      • 1...Sd5
        • 2.Qg6#
        • 2.h8Q#
        • 2.h8R#
      • 1...Sd7
        • 2.Qg6#
        • 2.h8Q#
        • 2.h8R#
      • 1...Se8
        • 2.Qg6#
        • 2.h8Q#
        • 2.h8R#
      • 1...Sg8
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(c);::S(C)
    • S(c);XP(E)::S(C)
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • S(c);P_SPINS(c)::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);CHECK
      • Vars
        • S(c);P_SPINS(c)::S(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(c)::P=Q
      • S(c);OGATE,XS(B)::QAB1(D)
      • S(c);OGATE,XP(E)::QAB1(D)
      • P(a);OGATEB::QAR2(D),XP(a)
      • S(c);OGATE::QAB1(D)
HTML5 logo

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).