MESON Chess Problem Database

Problem Display
PID: 10948 (n6k/7b/Q4Kp1/8/8/8/8/8 w - - 0 1)

Loyd, Sam

Detroit Free Press, 1877

n6k/7b/Q4Kp1/8/8/8/8/8

#2

2 + 4

5206 Sam Loyd and His Chess Problems 1913
3295 Einfuhrung in die Welt des Schachproblem 1984
15 British Chess Magazine 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kg8
      • 2.Qc8#
      • 2.Qxa8#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qa1#
        • 2.Qf6#
      • 1...Sb6
        • 2.Qa1#
      • 1...Bg8+!
    • 1.Qb7?
      • threat
        • 2.Qg7#
      • 1...Kg8
        • 2.Qxa8#
        • 2.Qc8#
        • 2.Qg7#
        • 2.Qb8#
      • 1...Sc7!
    • 1.Qa7?
      • threat
        • 2.Qg7#
      • 1...Kg8
        • 2.Qb8#
        • 2.Qg7#
        • 2.Qxa8#
      • 1...Sc7!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Kf7#
      • 1...Kg8
        • 2.Qxa8#
      • 1...Bg8
        • 2.Kxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB(A)
      • Refutation
        • B(b);CHECK
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+K(B)
    • Vars
      • K(d);P-FLIGHT::QAR(A),XS(c)
      • B(b);SBLOCK::QAB(A)+K(B),XP(a)
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).