MESON Chess Problem Database

Problem Display
PID: 214820 (1B6/2N2pP1/R3p3/3PpkPK/8/3PP3/8/8 w - - 0 1)

Sardella, Giuseppe

Best Problems, 2020

1B6/2N2pP1/R3p3/3PpkPK/8/3PP3/8/8

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...exd5
      • 2.Rf6#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.e4#
      • 1...e4
        • 2.Sd4#
      • 1...fxe6!
    • 1.Se8?
      • threat
        • 2.Sd6#
      • 1...exd5
        • 2.Rf6#
      • 1...e4!
    • 1.Rxe6?
      • threat
        • 2.Rf6#
      • 1...f6
        • 2.Rxf6#
      • 1...e4
        • 2.dxe4#
      • 1...fxe6!
    • 1.g8Q?
      • threat
        • 2.Qxf7#
        • 2.Qh7#
      • 1...f6
        • 2.Qxe6#
        • 2.Qh7#
        • 2.Qg6#
      • 1...e4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sd6#
      • 1...exd5
        • 2.Rf6#
      • 1...e4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XP(C)::R1(F)
  • Tries
    • Try
      • S(G);XP(c)
      • Threat
        • P(B)
      • Vars
        • P(a);N_GUARD::S(G)
      • Refutation
        • P(d);XS(G)
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • P(c);OGATE,XP(C)::R1(F)
      • Refutation
        • P(a);
    • Try
      • R(F);XP(c)
      • Threat
        • R1(F)
      • Vars
        • P(d);::R1(F),XP(d)
        • P(a);OGATE::P(A),XP(a)
      • Refutation
        • P(d);XR(F)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Refutation
        • P(a);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • P(c);OGATE,XP(C)::R1(F)
      • P(a);N_GUARD::S(G)
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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).