Problem Display
PID: 32637 (6B1/8/2n2K2/3N4/1B1Nk3/2Pp1b2/5p2/6b1 w - - 0 1)

Portilla, Vincente Maria Norberto

The Chess Players' Quarterly Chronicle, 1870

6B1/8/2n2K2/3N4/1B1Nk3/2Pp1b2/5p2/6b1

#2

6 + 6


3498 Chess Problems by V. M. N. Portilla 1873

SOLUTION


  • SOUND
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
        • 2.Sc5#
      • 1...Bd1
        • 2.Sd2#
      • 1...Bh1
        • 2.Sd2#
      • 1...Be2
        • 2.Sd2#
      • 1...Bg2
        • 2.Sd2#
      • 1...Bg4
        • 2.Sd2#
      • 1...Bh5
        • 2.Sd2#
      • 1...d2
        • 2.Sc5#
      • 1...f1Q
        • 2.Sd2#
      • 1...f1B
        • 2.Sd2#
      • 1...f1R
        • 2.Sd2#
      • 1...f1S!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc5#
        • 2.Sg5#
      • 1...Kxd5
        • 2.Sg5#
      • 1...Bd1
        • 2.Sg5#
      • 1...Bh1
        • 2.Sg5#
      • 1...Be2
        • 2.Sg5#
      • 1...Bg2
        • 2.Sg5#
      • 1...Bg4
        • 2.Sg5#
      • 1...Bh5
        • 2.Sg5#
      • 1...d2
        • 2.Sc5#
      • 1...f1Q
        • 2.Sg5#
      • 1...f1S
        • 2.Sg5#
      • 1...f1B
        • 2.Sg5#
      • 1...f1R
        • 2.Sg5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::S(C)
        • P(c);::S(C)
        • P(b);::S(C)
      • Refutation
        • P(b);
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(e);S_FLIGHT,XS(D)::B(F)+S(C)
      • B(d);::S(C)
      • P(c);::S(C)
      • P(b);::S(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).