MESON Chess Problem Database

Problem Display
PID: 60309 (1Q5q/3p4/3Npp2/2Ppk3/1p1r2p1/1p1P2P1/1B6/R3K2R w QK - 0 1)

Loyd, Sam

New York Musical World, 1858

1Q5q/3p4/3Npp2/2Ppk3/1p1r2p1/1p1P2P1/1B6/R3K2R

#2

9 + 10

5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qxh8#
  • Tries
    • 1.Rh5+?
      • 1...f5
        • 2.Qxh8#
      • 1...Qxh5!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Sc4#
        • 2.Sf7#
      • 1...Qxb8
        • 2.Sf7#
      • 1...f5
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATEB::QAB(I),XQ(j)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB(I),XQ(j)
      • Refutation
        • Q(j);XR(C)
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • Q(j);XQ(I)::S(H)
      • P(h);OGATEB::QAB(I),XQ(j)
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).