Problem Display
PID: 40148 (2nB1Q2/4p3/1pp5/2k1p1N1/2P5/1K2p3/8/8 w - - 0 1)

Grinblat, Arieh

Variantim, 2001

2nB1Q2/4p3/1pp5/2k1p1N1/2P5/1K2p3/8/8

#2

5 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...Sd6
      • 2.Se6#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Se4#
      • 1...Sd6
        • 2.Se6#
      • 1...e4
        • 2.Sxe4#
      • 1...Kd6!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxe5#
      • 1...Kd4
        • 2.Se6#
      • 1...Kd6
        • 2.Se4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(g);N_SPINP(f),SBLOCK::S(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • S(C)
      • Vars
        • S(g);N_SPINP(f),SBLOCK::S(C)
        • P(c);::S(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);N_PINP(f),P_PINP(c)
    • Threat
      • QAR2(E),XP(c)
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::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).