MESON Chess Problem Database

Problem Display
PID: 180507 (6b1/3Pn3/3pP3/4k1K1/3p4/N2P4/Q7/8 w - - 0 1)

Lider, Valentin Viktorovich

3rd Prize, Komsomolets Zaporozhya, 1974

6b1/3Pn3/3pP3/4k1K1/3p4/N2P4/Q7/8

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.d8Q?
      • 1...Bxe6
        • 2.Qh8#
      • 1...d5
        • 2.Qe2#
      • 1...Bf7
        • 2.Qh8#
      • 1...Bh7
        • 2.Qh8#
      • 1...Sf5
        • 2.Qf6#
      • 1...Sc6
        • 2.Qf6#
      • 1...Sg6
        • 2.Qf6#
      • 1...Sc8
        • 2.Qf6#
      • 1...Sd5!
  • Keys
    • 1.d8S!
      • 1...Bxe6
        • 2.Qxe6#
      • 1...d5
        • 2.Qh2#
      • 1...Bf7
        • 2.Sxf7#
      • 1...Bh7
        • 2.Sf7#
      • 1...Sd5
        • 2.Sc4#
      • 1...Sf5
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sg6
        • 2.Sc6#
      • 1...Sc8
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(F);
      • Vars
        • B(e);OGATE,XP(E)::QAB(F)
        • P(c);::QAR(A)
        • B(e);OGATE::QAB(F)
        • S(d);OGATE::QAB1(F)
      • Refutation
        • S(d);
  • Actual
    • P(F);
    • Vars
      • B(e);OGATE,XP(E)::QAR1(A),XB(e)
      • P(c);SBLOCK::QAB(A)
      • B(e);N_GUARD::S(F),XB(e)
      • B(e);N_GUARD::S(F)
      • S(d);SBLOCK::S(B)
      • S(d);N_GUARD::S(F)
      • S(d);N_GUARD::S(F),XS(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).