MESON Chess Problem Database

Problem Display
PID: 260698 (2b2B2/3p4/2PP1pKn/1Q1Pk1p1/2Bp4/5PP1/5N2/2n5 w - - 0 1)

Somma, Francesco

Il Secolo, 1928

2b2B2/3p4/2PP1pKn/1Q1Pk1p1/2Bp4/5PP1/5N2/2n5

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sd3#
    • 1...Se2
      • 2.Sd3#
    • 1...Sb3
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sg4
      • 2.Sxg4#
    • 1...Sf5
      • 2.Sg4#
    • 1...Sf7
      • 2.Sg4#
    • 1...Sg8
      • 2.Sg4#
    • 1...d3
      • 2.Qb2#
    • 1...g4
      • 2.f4#
    • 1...dxc6
      • 2.dxc6#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...d3
        • 2.Qa1#
        • 2.Qb2#
      • 1...Sd3
        • 2.Sxd3#
      • 1...f5!
  • Keys
    • 1.Qb8!
      • 1...dxc6
        • 2.d7#
      • 1...d3
        • 2.Qb2#
      • 1...Ba6
        • 2.Qe8#
      • 1...Bb7
        • 2.Qe8#
      • 1...Sa2
        • 2.Sd3#
      • 1...Se2
        • 2.Sd3#
      • 1...Sb3
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sg4
        • 2.Sxg4#
      • 1...Sf5
        • 2.Sg4#
      • 1...Sf7
        • 2.Sg4#
      • 1...Sg8
        • 2.Sg4#
      • 1...g4
        • 2.f4#
      • 1...f5
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(f);N_GUARD::S(A),XS(f)
    • S(f);N_GUARD::S(A)
    • P(b);OGATEB::QAB(E)
    • P(d);N_GUARD::P(B)
    • P(g);OGATE,XP(G)::QAR(E)+P(F),XP(g)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • S(a);N_GUARD::S(A),XS(a)
      • Refutation
        • P(e);
  • Actual
    • Q(E);
    • Vars
      • P(g);OGATE,XP(G)::QAB(E)+P(H)
      • P(b);OGATEB::QAB(E)
      • B(h);OGATE::QAR(E)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(f);N_GUARD::S(A),XS(f)
      • S(f);N_GUARD::S(A)
      • P(d);N_GUARD::P(B)
      • P(e);OGATEB::B(J)
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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).