MESON Chess Problem Database

Problem Display
PID: 86562 (2K2n2/8/1kp5/8/Q3N3/2P5/8/8 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Smena, 1993

2K2n2/8/1kp5/8/Q3N3/2P5/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • 1...Se6
        • 2.Sd7#
      • 1...Sg6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sh7
        • 2.Sd7#
      • 1...Kxc5!
    • 1.Qb4+?
      • 1...Ka7
        • 2.Qa5#
        • 2.Qb7#
      • 1...Ka6!
    • 1.Qa7+?
      • 1...Kb5
        • 2.Sd6#
      • 1...Kxa7!
  • Keys
    • 1.Sf6!
      • 1...Kc5
        • 2.Qb4#
      • 1...Se6
        • 2.Sd7#
      • 1...Sg6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sh7
        • 2.Sd7#
      • 1...c5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • S(c);N_GUARD::S(C)
      • S(c);N_GUARD::S(C),XS(c)
      • P(b);N_GUARD,SBLOCK::S(C)
HTML5 logo

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).