MESON Chess Problem Database

Problem Display
PID: 260717 (6R1/4Nn2/1p6/1r5p/R5pk/7r/1pP2P1N/1K2Q3 w - - 0 1)

Somma, Francesco

Il Secolo, 1926

6R1/4Nn2/1p6/1r5p/R5pk/7r/1pP2P1N/1K2Q3

#2

8 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Sf5#
    • 1...Rb4
      • 2.Sf5#
    • 1...Rf5
      • 2.Sxf5#
    • 1...Se5
      • 2.Sf5#
    • 1...Sg5
      • 2.Sg6#
  • Tries
    • 1.f4+?
      • 1...g3
        • 2.Sf3#
        • 2.Sg6#
      • 1...Rg3!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Sf3#
      • 1...Rxh2
        • 2.Qxh2#
      • 1...Rf3
        • 2.Sxf3#
      • 1...Rbb3
        • 2.Sf5#
      • 1...Rb4
        • 2.Sf5#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Se5
        • 2.Sf5#
      • 1...Sg5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::S(G)
    • R(e);N_GUARD,N_SPINP(c)::S(G)
    • R(e);N_GUARD::S(G),XR(e)
    • S(h);S_CUTR(e)::S(G)
    • S(h);SBLOCK::S(G)
  • Tries
    • Try
      • P(D);CHECK,N_PINP(c)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • Q(B);
    • Threat
      • S(E)
    • Vars
      • R(b);OGATE,P_SPINR(b),XS(E)::QAR2(B),XR(b)
      • R(b);::QAR(B)+S(E),DCHECK,XR(b)
      • R(e);N_GUARD::S(G)
      • R(e);N_GUARD,N_SPINP(c)::S(G)
      • R(e);N_GUARD::S(G),XR(e)
      • S(h);S_CUTR(e)::S(G)
      • S(h);SBLOCK::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).