MESON Chess Problem Database

Problem Display
PID: 180284 (1B6/5K2/5p2/5kP1/4p3/8/5nQP/3n1N2 w - - 0 1)

Lider, Valentin Viktorovich

64 Shakhmatnoe obozrenie, 1972

1B6/5K2/5p2/5kP1/4p3/8/5nQP/3n1N2

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Se3#
    • 1...Sc3
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
  • Tries
    • 1.h3?
      • 1...fxg5
        • 2.Sg3#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sb2
        • 2.Se3#
      • 1...Sc3
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sh1
        • 2.Qg4#
      • 1...Sd3
        • 2.Qg4#
      • 1...e3
        • 2.Qd5#
      • 1...Sxh3!
  • Keys
    • 1.h4!
      • 1...fxg5
        • 2.Qxg5#
      • 1...Sb2
        • 2.Se3#
      • 1...Sc3
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sh1
        • 2.Qh3#
      • 1...Sd3
        • 2.Qh3#
      • 1...Sh3
        • 2.Qxh3#
      • 1...Sg4
        • 2.Sg3#
      • 1...e3
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
  • Tries
    • Try
      • P(C);
      • Vars
        • P(e);SBLOCK,XP(D)::S(A)
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(a);N_GUARD::S(A)
        • S(a);N_GUARD::S(A),XS(a)
        • S(b);N_GUARD::QAB1(B)
        • P(c);OGATE::QAR2(B)
      • Refutation
        • S(b);XP(C)
  • Actual
    • P(C);
    • Vars
      • P(e);OGATE,XP(D)::QAR1(B),XP(e)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(b);N_GUARD::QAB(B)
      • S(b);N_GUARD::QAB(B),XS(b)
      • S(b);SBLOCK::S(A)
      • P(c);N_GUARD::QAR2(B)
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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).