MESON Chess Problem Database

Problem Display
PID: 265207 (Q2b4/2pN3K/2N5/1b1k1B2/8/1P6/7B/4n3 w - - 0 1)

Carra, Arturo

L'Italia Scacchistica, 1926

Q2b4/2pN3K/2N5/1b1k1B2/8/1P6/7B/4n3

#2

7 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Be5?
      • threat
        • 2.Sb4#
        • 2.Se7#
      • 1...Be7
        • 2.Sb4#
        • 2.Sxe7#
      • 1...Bxc6!
    • 1.Qa7?
      • threat
        • 2.Sb4#
        • 2.Qc5#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxc6
        • 2.Qc5#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sc2
        • 2.Qc5#
      • 1...Sd3!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxc6
        • 2.Qe5#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sc2
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Refutation
        • B(b);P_SPINB(b),XS(D)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(D)::QAB(G)
        • B(b);XS(D)::QAR1(G)
        • B(e);N_GUARD::S(D),XB(e)
        • S(a);::QAR1(G)
      • Refutation
        • S(a);
  • Actual
    • Q(G);
    • Threat
      • S(D)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB(G)
      • B(b);SBLOCK,XS(D)::QAR1(G)
      • B(e);N_GUARD::S(D),XB(e)
      • S(a);OGATE::QAB(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).