MESON Chess Problem Database

Problem Display
PID: 261451 (7K/3N3n/1p2R3/3k4/1Pp2RBp/2p5/n3N3/6bq w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1929

7K/3N3n/1p2R3/3k4/1Pp2RBp/2p5/n3N3/6bq

#2

7 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sxb6#
      • 2.Rd4#
    • 1...Bd4+
      • 2.Rxd4#
    • 1...Sc1
      • 2.Sxc3#
    • 1...Sxb4
      • 2.Sxc3#
    • 1...Sg5
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sf8
      • 2.Sf6#
  • Tries
    • 1.Kxh7?
      • threat
        • 2.Sf6#
      • 1...Sxb4
        • 2.Sxc3#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Qe4+!
  • Keys
    • 1.Rff6!
      • threat
        • 2.Re5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Qe4
        • 2.Rd6#
      • 1...Qh2
        • 2.Bf3#
      • 1...Bh2
        • 2.Sxb6#
      • 1...Bd4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);CHECK,N_GUARD::R1(C),XB(a)
    • S(c);N_GUARD::S(A),XP(d)
    • S(c);N_GUARD,XP(B)::S(A),XP(d)
    • S(i);N_GUARD::S(F)
    • S(i);N_GUARD::S(F),XS(i)
  • Tries
    • Try
      • K(G);P-FLIGHT,XS(i)
      • Threat
        • S(F)
      • Vars
        • S(c);N_GUARD,XP(B)::S(A),XP(d)
        • B(a);N_GUARD::R1(C),XB(a)
      • Refutation
        • Q(b);CHECK
  • Actual
    • R(C);
    • Threat
      • R1(E)
    • Vars
      • S(i);XR(C)::S(F),XS(i)
      • Q(b);SBLOCK::R1(E)
      • Q(b);N_GUARD::B(D)
      • B(a);N_GUARD::S(F),XP(h)
      • B(a);P_PINR(C),SBLOCK::S(A)
HTML5 logo

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).