MESON Chess Problem Database

Problem Display
PID: 145392 (8/8/8/4N3/5p2/b1Q3P1/8/3k1K2 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 2012

8/8/8/4N3/5p2/b1Q3P1/8/3k1K2

#2

4 + 3

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sf2#
      • 1...Bc5
        • 2.Sb2#
        • 2.Qc1#
      • 1...fxg3!
    • 1.Sf3?
      • threat
        • 2.Qd2#
      • 1...Bc1
        • 2.Qb3#
      • 1...Bb4!
    • 1.Sg4?
      • threat
        • 2.Sf2#
      • 1...fxg3
        • 2.Se3#
      • 1...Bc5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qd2#
      • 1...Bc1
        • 2.Qb3#
      • 1...Bb4
        • 2.Sb2#

Anticipated by 194157(1917)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Refutation
        • P(c);XP(C)
    • Try
      • S(D);
      • Threat
        • QAR1(B)
      • Vars
        • B(b);SBLOCK::QAB(B)
      • Refutation
        • B(b);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • P(c);N_GUARD,XP(C)::S(D)
      • Refutation
        • B(b);
  • Actual
    • S(D);
    • Threat
      • QAR1(B)
    • Vars
      • B(b);SBLOCK::QAB(B)
      • B(b);N_GUARD::S(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).