MESON Chess Problem Database

Problem Display
PID: 214693 (8/K7/3p4/3p1P1Q/k1p5/pNP5/p7/B7 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1878

8/K7/3p4/3p1P1Q/k1p5/pNP5/p7/B7

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb3
      • 2.Qd1#
    • 1...Kb5
      • 2.Qe8#
  • Tries
    • 1.Ka6?
      • 1...Kxb3
        • 2.Qd1#
      • 1...cxb3
        • 2.Qe8#
      • 1...d4!
    • 1.Kb6?
      • 1...Kxb3
        • 2.Qd1#
      • 1...cxb3
        • 2.Qe8#
      • 1...d4!
  • Keys
    • 1.Qe2!
      • 1...Kxb3
        • 2.Qd1#
      • 1...Kb5
        • 2.Qe8#
      • 1...cxb3
        • 2.Qa6#
      • 1...d4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
    • K(c);S_FLIGHT::QAB(E)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
        • P(d);SBLOCK,XS(B)::QAB(E)
      • Refutation
        • P(e);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
        • P(d);SBLOCK,XS(B)::QAB(E)
      • Refutation
        • P(e);
  • Actual
    • Q(E);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
      • K(c);P_SPINP(d),S_FLIGHT::QAB(E)
      • P(d);OGATE,SBLOCK,XS(B)::QAR2(E)
      • P(e);N_GUARD::QAR2(E),XP(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).