Problem Display
PID: 263352 (2r5/3p2b1/8/2P1pp2/2R4n/3Nk1P1/1P4n1/3R1K1B w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1932

2r5/3p2b1/8/2P1pp2/2R4n/3Nk1P1/1P4n1/3R1K1B

#2

8 + 8


15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION


  • SOUND
  • Tries
    • 1.Sb4?
      • threat
        • 2.Rd3#
      • 1...Kf3
        • 2.Rd3#
      • 1...Se1
        • 2.Sd5#
      • 1...Sf4
        • 2.Sc2#
      • 1...e4!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Sf2#
      • 1...Kf3
        • 2.Sf2#
      • 1...Kd4
        • 2.Sf2#
      • 1...Ke4
        • 2.Sf2#
      • 1...Rxc5
        • 2.Sxc5#
      • 1...Se1
        • 2.Sxe1#
      • 1...Sf4
        • 2.Sxf4#
      • 1...e4
        • 2.Se5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(A)
      • Vars
        • K(b);P-FLIGHT,P_SPINS(a)::R(A)
        • S(a);::S(E)
      • Refutation
        • P(d);
  • Actual
    • R(G);
    • Threat
      • R(G)+S(E)
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::R(G)+S(E)
      • K(b);S_FLIGHT::R(A)+S(E)
      • K(b);P-FLIGHT,P_SPINS(a)::S(E)
      • R(h);XP(H)::R(G)+S(E),XR(h)
      • S(a);::R(G)+S(E),XS(a)
      • P(d);SBLOCK::R(G)+S(E)


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).