MESON Chess Problem Database

Problem Display
PID: 259669 (6b1/Q3p3/3RPk1K/2P3p1/1pN2nB1/7p/p2B3P/8 w - - 0 1)

Somma, Francesco

1st HM., L'Italia Scacchistica, 1925

6b1/Q3p3/3RPk1K/2P3p1/1pN2nB1/7p/p2B3P/8

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bxg5#
    • 1...Sg2
      • 2.Bxg5#
    • 1...Sd3
      • 2.Bxg5#
    • 1...Sd5
      • 2.Bxg5#
    • 1...Sh5
      • 2.Bxg5#
    • 1...Sg6
      • 2.Bxg5#
    • 1...a1Q
      • 2.Qxa1#
    • 1...a1S
      • 2.Qxa1#
    • 1...a1B
      • 2.Qxa1#
    • 1...a1R
      • 2.Qxa1#
    • 1...b3
      • 2.Bc3#
    • 1...exd6
      • 2.Qg7#
  • Tries
    • 1.c6?
      • threat
        • 2.Qd4#
      • 1...Sxe6
        • 2.Qf2#
      • 1...exd6
        • 2.Qg7#
      • 1...a1Q
        • 2.Qxa1#
      • 1...a1B
        • 2.Qxa1#
      • 1...Se2
        • 2.Bxg5#
      • 1...Sd3
        • 2.Bxg5#
      • 1...Sg6
        • 2.Bxg5#
      • 1...Bxe6!
  • Keys
    • 1.Qa8!
      • 1...Bxe6
        • 2.Qf8#
      • 1...Sxe6
        • 2.Qf3#
      • 1...exd6
        • 2.Qd8#
      • 1...a1Q
        • 2.Qxa1#
      • 1...a1S
        • 2.Qxa1#
      • 1...a1B
        • 2.Qxa1#
      • 1...a1R
        • 2.Qxa1#
      • 1...Bf7
        • 2.Qh8#
      • 1...Bh7
        • 2.Qf8#
        • 2.Qh8#
      • 1...Se2
        • 2.Bxg5#
      • 1...Sg2
        • 2.Bxg5#
      • 1...Sd3
        • 2.Bxg5#
      • 1...Sd5
        • 2.Bxg5#
      • 1...Sh5
        • 2.Bxg5#
      • 1...Sg6
        • 2.Bxg5#
      • 1...b3
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE::B(A),XP(e)
    • P(a);OGATE::QAB(I),XQ(a)
    • P(a);OGATE::QAB(I),XS(a)
    • P(a);OGATE::QAB(I),XB(a)
    • P(a);OGATE::QAB(I),XR(a)
    • P(c);N_GUARD::B(A)
    • P(g);OGATE,XR(F)::QAB1(I)
  • Tries
    • Try
      • P(E);
      • Threat
        • QAB(I)
      • Vars
        • S(d);OGATEB,P_SPINS(d),XP(G)::QAR(I)
        • P(g);OGATE,XR(F)::QAB1(I)
        • P(a);OGATE::QAB(I),XQ(a)
        • P(a);OGATE::QAB(I),XB(a)
        • S(d);OGATE::B(A),XP(e)
      • Refutation
        • B(h);P_SPINB(h),XP(G)
  • Actual
    • Q(I);
    • Vars
      • B(h);N_GUARD,P_SPINB(h),XP(G)::QAR2(I)
      • S(d);OGATEB,P_SPINS(d),XP(G)::QAR(I)
      • P(g);OGATEB,XR(F)::QAB(I)
      • P(a);OGATE::QAB(I),XQ(a)
      • P(a);OGATE::QAB(I),XS(a)
      • P(a);OGATE::QAB(I),XB(a)
      • P(a);OGATE::QAB(I),XR(a)
      • B(h);OGATE::QAB(I)
      • S(d);OGATE::B(A),XP(e)
      • P(c);N_GUARD::B(A)
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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).