Problem Display
PID: 231212 (8/K7/2pP3p/kb3N1R/Nr1p4/3Pb3/1P6/R3B3 w - - 0 1)

Mari, Alberto

L'Italia Scacchistica, 1927

8/K7/2pP3p/kb3N1R/Nr1p4/3Pb3/1P6/R3B3

#2

9 + 7


6490 yacpdb 2021

SOLUTION


  • SOUND
  • Tries
    • 1.Sxe3?
      • threat
        • 2.Sc4#
        • 2.Sb6#
      • 1...dxe3
        • 2.Sb6#
      • 1...c5!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Sb6#
      • 1...Bd2
        • 2.Sxc6#
      • 1...Bg5
        • 2.Sb3#
      • 1...c5
        • 2.Sb3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);P_PINB(e),XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(F)::R(A)+S(E)
      • Refutation
        • P(f);N_SPINB(e)
  • Actual
    • S(F);P_PINB(e),P_SPINS(F),XP(c)
    • Threat
      • R(A)+S(E)
    • Vars
      • B(a);N_PINS(F),N_SPINR(b)::S(F),XP(f)
      • B(a);N_PINS(F),N_SPINB(e)::S(F)
      • P(f);N_PINS(F),N_SPINB(e)::S(F)


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).