Problem Display
PID: 120236 (8/3p1p2/1p6/1p2kPp1/1B2N1P1/3P2K1/6p1/5bQ1 w - - 0 1)

Cauveren, Jonas Ephraim

Nederlandse Schaakbond, 1907

8/3p1p2/1p6/1p2kPp1/1B2N1P1/3P2K1/6p1/5bQ1

#2

7 + 8


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...d5
      • 2.Bd6#
  • Tries
    • 1.Qc5+?
      • 1...d5
        • 2.Bc3#
      • 1...bxc5!
  • Keys
    • 1.Sf6!
      • 1...Kxf6
        • 2.Qd4#
      • 1...Bxd3
        • 2.Qa1#
      • 1...Be2
        • 2.Qa1#
      • 1...d5
        • 2.Sd7#
      • 1...d6
        • 2.Bc3#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(g);SBLOCK::B(D)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • P(g);P_SPINP(g)::B(D)
      • Refutation
        • P(f);XQ(A)
  • Actual
    • S(E);
    • Vars
      • K(d);S_FLIGHT,XS(E)::QAB(A)
      • B(a);OGATE,XP(B)::QAB(A)
      • B(a);OGATE::QAB(A)
      • P(g);SBLOCK::S(E)
      • P(g);SBLOCK::B(D)


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).