Problem Display
PID: 164125 (6B1/4p1P1/1R4pB/2r2kN1/4p2p/2n2P1K/b1n1p2Q/8 w - - 0 1)

Sardella, Giuseppe

3rd HM., Best Problems, 2015

6B1/4p1P1/1R4pB/2r2kN1/4p2p/2n2P1K/b1n1p2Q/8

#2

8 + 10


4901 Best Problems 2018

SOLUTION


  • SOUND
  • Sets
    • 1...Sb1
      • 2.fxe4#
    • 1...Sd1
      • 2.fxe4#
    • 1...Sa4
      • 2.fxe4#
    • 1...Sb5
      • 2.fxe4#
    • 1...Sd5
      • 2.fxe4#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Qf4#
      • 1...Rc6
        • 2.Qe5#
      • 1...Sd5
        • 2.Qe5#
      • 1...g5
        • 2.Bh7#
      • 1...e5!
    • 1.Sh7?
      • threat
        • 2.Qf4#
      • 1...Sd5
        • 2.Be6#
      • 1...e5
        • 2.Rf6#
      • 1...g5!
    • 1.Be6+?
      • 1...Kf6
        • 2.Sh7#
        • 2.g8S#
      • 1...Bxe6!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Qf4#
      • 1...Sd5
        • 2.Be6#
      • 1...g5
        • 2.Bh7#
      • 1...e5
        • 2.Rf6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(d);N_GUARD::P(B),XP(e)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • R(g);N_GUARD::QAR1(A)
        • S(d);S_CUTR(g)::QAR1(A)
        • P(i);OGATEB::B(H)
      • Refutation
        • P(j);
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • S(d);S_CUTB(a)::B(H)
        • P(j);N_GUARD::R1(E)
      • Refutation
        • P(i);
    • Try
      • B(H);CHECK
      • Refutation
        • B(a);XB(H)
  • Actual
    • S(D);XP(e)
    • Threat
      • QAR1(A)
    • Vars
      • S(d);S_CUTB(a)::B(H)
      • P(i);OGATEB::B(H)
      • P(j);N_GUARD::R1(E)


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).