MESON Chess Problem Database

Problem Display
PID: 161691 (6Q1/8/6K1/8/3k4/3N4/2BP4/8 w - - 0 1)

Antonov, Yuri Mikhailovich

Schach-Magazin, 1989

6Q1/8/6K1/8/3k4/3N4/2BP4/8

#2

5 + 1

5454 Near Snap 2017
15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Bb3?
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kxd3!
  • Keys
    • 1.Bd1!
      • 1...Kxd3
        • 2.Qd5#
      • 1...Ke4
        • 2.Qc4#

Anticipated by 208130(1886), 4968(1895), 176183(1966)

This anticipates 28619(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • B(A);
    • Vars
      • K(a);P-FLIGHT,XS(C)::QAR2(E)
      • K(a);P-FLIGHT::QAR2(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).