MESON Chess Problem Database

Problem Display
PID: 261871 (8/n2Q2nb/1r2p3/Rp2k1K1/5N2/4p1p1/1Nr2P2/4bq1B w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1929

8/n2Q2nb/1r2p3/Rp2k1K1/5N2/4p1p1/1Nr2P2/4bq1B

#2

7 + 12

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Sc4#
    • 1...Rd6
      • 2.Qxg7#
    • 1...Bg6
      • 2.Sxg6#
    • 1...Bg8
      • 2.Sg6#
  • Tries
    • 1.Sfd3+?
      • 1...Qxd3
        • 2.f4#
      • 1...Bxd3!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qd4#
      • 1...Qxe2
        • 2.f4#
      • 1...Rxe2
        • 2.Sc4#
      • 1...Rd2
        • 2.Sc4#
      • 1...Rc4
        • 2.Sxc4#
      • 1...Rd6
        • 2.Qxg7#
      • 1...Bc3
        • 2.Sc4#
      • 1...Sc6
        • 2.Qc7#
      • 1...Sf5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD,S_CUTQ(b)::S(B)
    • R(h);SBLOCK::QAB(G),XS(k)
    • B(l);N_GUARD::S(D),XB(l)
    • B(l);N_GUARD::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • Q(b);XS(D)::P(C)
      • Refutation
        • B(l);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB1(G)
    • Vars
      • Q(b);N_GUARD,XS(D)::P(C)
      • R(c);N_GUARD,XS(D)::S(B)
      • R(c);N_GUARD::S(B)
      • R(c);N_GUARD::S(B),XR(c)
      • R(h);SBLOCK::QAB(G),XS(k)
      • B(a);S_CUTR(c)::S(B)
      • S(j);S_CUTR(c),S_CUTR(h)::QAB(G)
      • S(k);S_CUTB(l)::S(B)
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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).