MESON Chess Problem Database

Problem Display
PID: 246695 (8/3N1nrB/K1N3qp/p2PPkPP/r1nb3Q/4p3/8/8 w - - 0 1)

Petite, Efren

El Ajedrez Espanol, 1958

8/3N1nrB/K1N3qp/p2PPkPP/r1nb3Q/4p3/8/8

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh7
      • 2.Sxd4#
      • 2.Se7#
    • 1...Bb6
      • 2.Se7#
    • 1...Sb6
      • 2.Se7#
    • 1...Scd6
      • 2.Se7#
    • 1...Sfd6
      • 2.Sxd4#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qg4#
      • 1...Scxe5
        • 2.Se7#
      • 1...Sfxe5
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(d);N_PINS(G)::S(G)
    • S(c);N_PINS(G)::S(G)
    • S(i);N_PINS(G)::S(G),XB(d)
  • Actual
    • S(H);N_SPINS(G)
    • Threat
      • QAB1(A)
    • Vars
      • S(c);SBLOCK,XP(C)::S(G)
      • S(i);SBLOCK,XP(C)::S(G),XB(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).