Problem Display
PID: 79435 (4R2B/8/3pnr2/Q2nk3/2p1p2N/2P1Rp1N/5P2/3BK3 w - - 0 1)

Barth, Michael

Linss, Torsten

Mehlhorn, Uwe

Prize, Leutersdorf, 1991

4R2B/8/3pnr2/Q2nk3/2p1p2N/2P1Rp1N/5P2/3BK3

#2

10 + 8


SOLUTION


  • SOUND
  • Tries
    • 1.Re2?
      • 1...e3
        • 2.Rxe3#
      • 1...fxe2!
    • 1.Rxf3?
      • threat
        • 2.Sg6#
        • 2.Bxf6#
        • 2.Rf5#
      • 1...e3
        • 2.Rxe3#
      • 1...exf3!
  • Keys
    • 1.Be2!
      • 1...fxe2
        • 2.f4#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • P(c);OGATEB::R(E),XP(c)
      • Refutation
        • P(a);N_SPINP(c),XR(E)
    • Try
      • R(E);N_PINP(c),XP(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(c);OGATEB::R(E),XP(c)
      • Refutation
        • P(c);XR(E)
  • Actual
    • B(A);
    • Vars
      • P(a);OGATE,XB(A)::P(C)


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).