Problem Display
PID: 232898 (8/8/8/5R2/2pkp3/3B4/6Q1/K7 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Kudesnik, 2005

8/8/8/5R2/2pkp3/3B4/6Q1/K7

#2

4 + 3


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...c3
      • 2.Qxe4#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qd2#
      • 1...Ke3
        • 2.Qf2#
      • 1...c3
        • 2.Qxe4#
      • 1...e3
        • 2.Qg7#
      • 1...Kc3!
  • Keys
    • 1.Bb1!
      • threat
        • 2.Qd2#
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke3
        • 2.Qf2#
      • 1...c3
        • 2.Qxe4#
      • 1...e3
        • 2.Qg7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR1(B),XP(c)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B),XP(c)
        • P(c);SBLOCK::QAB(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);SBLOCK::QAR1(B),XP(c)
      • P(c);SBLOCK::QAB(B)


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).