MESON Chess Problem Database

Problem Display
PID: 164994 (8/Q7/8/1PpP4/1ppp4/n1k5/1NpN4/2K5 w - - 0 1)

Shanshin, Valery Yurevich

Novi Temi, 1980

8/Q7/8/1PpP4/1ppp4/n1k5/1NpN4/2K5

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qa5#
    • 1...d3
      • 2.Qg7#
  • Tries
    • 1.Qxa3+?
      • 1...b3
        • 2.Se4#
        • 2.Qa5#
      • 1...bxa3!
    • 1.Qh7?
      • threat
        • 2.Sa4#
      • 1...d3
        • 2.Qg7#
        • 2.Qh8#
      • 1...b3!
  • Keys
    • 1.Qxc5!
      • 1...Sxb5
        • 2.Qxc4#
      • 1...Sb1
        • 2.Qxc4#
      • 1...b3
        • 2.Se4#
      • 1...d3
        • 2.Sa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB::QAB(F)
    • P(f);OGATEB::QAB(F)
  • Tries
    • Try
      • Q(F);CHECK,XS(b)
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);
      • Threat
        • S(B)
      • Refutation
        • P(d);
  • Actual
    • Q(F);P_PINP(e),XP(g)
    • Vars
      • S(b);N_GUARD,XP(D)::QAR1(F),XP(e)
      • S(b);N_GUARD::QAR1(F),XP(e)
      • P(d);SBLOCK::S(C)
      • P(f);SBLOCK::S(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).