MESON Chess Problem Database

Problem Display
PID: 262325 (3r2BQ/1n1rP3/6p1/4N3/2Pk2K1/B2P4/3P4/4n3 w - - 0 1)

Somma, Francesco

L'Echiquier, 1925

3r2BQ/1n1rP3/6p1/4N3/2Pk2K1/B2P4/3P4/4n3

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Bb2#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Sc6#
        • 2.Qe3#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Sxd3
        • 2.Qe3#
      • 1...Rd6
        • 2.Qe3#
      • 1...Rc7
        • 2.Qe3#
      • 1...Rc8
        • 2.Qe3#
      • 1...Sc2
        • 2.Sc6#
      • 1...Sg2
        • 2.Sc6#
      • 1...Sa5
        • 2.Qe3#
      • 1...Sf3!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Sxd3
        • 2.Sc6#
      • 1...Sg2
        • 2.Qa1#
      • 1...Sf3
        • 2.Qa1#
      • 1...Sc5
        • 2.Bb2#
      • 1...Sd6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::B(B)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(F)::QAB(I)
        • S(a);XP(C)::QAB1(I)
        • R(e);::QAB1(I)
        • R(f);::QAB1(I)
        • S(a);::S(F)
        • S(d);::QAB1(I)
      • Refutation
        • S(a);
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(F)::QAB(I)
      • S(a);SBLOCK,XP(C)::S(F)
      • S(a);OGATE::QAB(I)
      • S(d);SBLOCK::B(B)
      • S(d);S_CUTR(e)::QAR1(I)
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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).