Problem Display
PID: 159747 (8/4p3/1BpR2P1/2p3p1/2K2kP1/3P1p1P/5P2/8 w - - 0 1)

Alliet, Wilfried

Probleemblad, 1973

8/4p3/1BpR2P1/2p3p1/2K2kP1/3P1p1P/5P2/8

#2

8 + 6


15148 Sadier Collection 2017

SOLUTION


  • SOUND
  • Sets
    • 1...e5
      • 2.Rf6#
  • Tries
    • 1.Rxc6?
      • 1...Ke5
        • 2.Bc7#
      • 1...e5
        • 2.Rf6#
      • 1...e6!
    • 1.Rf6+?
      • 1...exf6
        • 2.Bc7#
      • 1...Ke5!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Rd4#
        • 2.Re6#
        • 2.Rf6#
      • 1...Ke5
        • 2.Rxc6#
      • 1...exd6
        • 2.Bxd6#
      • 1...e5
        • 2.Rf6#
      • 1...e6
        • 2.Rd4#
        • 2.Rxe6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);N_GUARD,SBLOCK::R(G)
  • Tries
    • Try
      • R(G);XP(e)
      • Vars
        • K(b);S_FLIGHT::B(F)
        • P(f);N_GUARD,SBLOCK::R(G)
      • Refutation
        • P(f);
    • Try
      • R(G);CHECK
      • Vars
        • P(f);XR(G)::B(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(F);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);S_FLIGHT::B(F)+R(G),XP(e)
      • P(f);OGATE,P_SPINP(f),XR(G)::B(F),XP(f)
      • P(f);::R(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).