MESON Chess Problem Database

Problem Display
PID: 86908 (8/8/R1B5/Q7/3K2k1/8/6N1/8 w - - 0 1)

Sidorenko, A Peter

Molod Ukrainy, 1969

8/8/R1B5/Q7/3K2k1/8/6N1/8

#2

5 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5+?
      • 1...Kh3
        • 2.Qh4#
      • 1...Kxg5!
    • 1.Qh5+?
      • 1...Kg3
        • 2.Qh4#
      • 1...Kxh5!
  • Keys
    • 1.Qd8!
      • 1...Kg3
        • 2.Qh4#
      • 1...Kh3
        • 2.Qh4#
      • 1...Kf5
        • 2.Bd7#
      • 1...Kh5
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::B(E)
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).