Problem Display
PID: 224809 (2N5/Npp1RB1b/p1P5/1PkP1p2/8/2K1P1Pp/7B/R7 w - - 0 1)

Salai (Jr), Ladislav

Suomen Shakki, 1979

2N5/Npp1RB1b/p1P5/1PkP1p2/8/2K1P1Pp/7B/R7

#2

12 + 7


15148 Sadier Collection 2020

SOLUTION


  • SOUND
  • Tries
    • 1.Ra5?
      • threat
        • 2.b6#
      • 1...axb5
        • 2.Rxb5#
      • 1...b6!
    • 1.Rxc7?
      • threat
        • 2.cxb7#
      • 1...bxc6
        • 2.Rxc6#
      • 1...b6!
    • 1.b6?
      • threat
        • 2.Ra5#
      • 1...a5
        • 2.Rxa5#
      • 1...cxb6!
  • Keys
    • 1.Re5!
      • threat
        • 2.d6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)+P(F)
      • Vars
        • P(d);OGATE,P_SPINP(d),XP(F)::R1(A),XP(d)
      • Refutation
        • P(e);
    • Try
      • R(J);XP(f)
      • Threat
        • R(J)+P(H),XP(e)
      • Vars
        • P(e);OGATE,P_SPINP(e),XP(H)::R1(J),XP(e)
      • Refutation
        • P(e);
    • Try
      • P(F);
      • Threat
        • R(A)
      • Vars
        • P(d);::R(A),XP(d)
      • Refutation
        • P(f);XP(F)
  • Actual
    • R(J);
    • Threat
      • R(J)+P(G)


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).