Problem Display
PID: 145902 (8/2N5/8/r1P5/2kBK2R/r1P1p3/8/2N4B w - - 0 1)

Weiss, Berthold

Good Companions (December Meredith Ty.), 1917

8/2N5/8/r1P5/2kBK2R/r1P1p3/8/2N4B

#2

8 + 4


SOLUTION


  • SOUND
  • Tries
    • 1.Kxe3?
      • threat
        • 2.Bd5#
      • 1...Rxc5
        • 2.Be5#
        • 2.Bf6#
        • 2.Bg7#
        • 2.Bh8#
      • 1...Rxc3+!
    • 1.Ke5?
      • threat
        • 2.Bd5#
      • 1...Rxc3
        • 2.Bxe3#
      • 1...Rxc5+!
  • Keys
    • 1.Kf5!
      • threat
        • 2.Bd5#
      • 1...Rxc5+
        • 2.Be5#
      • 1...Rxc3
        • 2.Bxe3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);P-FLIGHT,P_SPINP(C),XP(b)
      • Threat
        • B(B)
      • Refutation
        • R(a);CHECK,XP(C)
    • Try
      • K(E);P-FLIGHT,P_SPINP(G)
      • Threat
        • B(B)
      • Vars
        • R(a);SBLOCK,XP(C)::R(F)+B(D),XP(b)
      • Refutation
        • R(d);CHECK,XP(G)
  • Actual
    • K(E);P_SPINP(G),S_FLIGHT
    • Threat
      • B(B)
    • Vars
      • R(d);CHECK,SBLOCK,XP(G)::R(F)+B(D)
      • R(a);SBLOCK,XP(C)::R(F)+B(D),XP(b)


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).