MESON Chess Problem Database

Problem Display
PID: 170855 (6R1/8/2K5/8/4k2n/2Q2p2/3B4/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2017

6R1/8/2K5/8/4k2n/2Q2p2/3B4/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Rg4#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd3!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Re5#
        • 2.Qe3#
        • 2.Qc4#
      • 1...Sg2
        • 2.Re5#
        • 2.Qc4#
      • 1...Sf5
        • 2.Rg4#
      • 1...Sg6
        • 2.Qe3#
        • 2.Qc4#
      • 1...f2
        • 2.Re5#
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::R(D)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • DUALS(3)
    • Vars
      • S(c);SBLOCK::R(D)
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).