Problem Display
PID: 265263 (8/8/8/2bNp3/4N2B/5B2/2P2P2/4k1K1 w - - 0 1)

Grassano, Carlos A

Coello-75 JT (Problemas), 2017

8/8/8/2bNp3/4N2B/5B2/2P2P2/4k1K1

#2

7 + 3


SOLUTION


  • SOUND
  • Sets
    • 1...Bxf2+
      • 2.Bxf2#
    • 1...Be3
      • 2.fxe3#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sd3#
      • 1...Bxf2+
        • 2.Bxf2#
      • 1...Bxb4!
    • 1.Sf4?
      • threat
        • 2.Sg2#
        • 2.Sd3#
      • 1...Bxf2+
        • 2.Bxf2#
      • 1...exf4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sg2#
      • 1...Bxe3
        • 2.fxe3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(b);CHECK,OGATE,P_SPINB(b),XP(C)::B(F),XB(b)
    • B(b);::B(F)+P(C),XB(b)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • B(b);CHECK,OGATE,P_SPINB(b),XP(C)::B(F),XB(b)
      • Refutation
        • B(b);N_PINP(C),XS(G)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);CHECK,OGATE,P_SPINB(b),XP(C)::B(F),XB(b)
      • Refutation
        • P(c);XS(G)
  • Actual
    • S(G);N_SPINP(C)
    • Threat
      • S(G)
    • Vars
      • B(b);OGATE,P_PINP(C),XS(G)::B(F)+P(C),XB(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).