MESON Chess Problem Database

Problem Display
PID: 207021 (8/8/8/8/8/8/4KNk1/1Q6 w - - 0 1)

Loyd, Sam

Household Journal, 1861

8/8/8/8/8/8/4KNk1/1Q6

#2

3 + 1

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • 1...Kg1
        • 2.Qg3#
      • 1...Kh2!
    • 1.Qh7?
      • 1...Kg1
        • 2.Qh1#
      • 1...Kg3!
    • 1.Qb3?
      • 1...Kg1
        • 2.Qg3#
      • 1...Kh2!
  • Keys
    • 1.Qb8!
      • 1...Kg1
        • 2.Qg3#

This anticipates 138406(1980)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
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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).