Problem Display
PID: 238952 (8/3K1Nb1/4P1p1/1p1N1k2/6p1/4pP1n/1rn5/B3Q3 w - - 0 1)

Petite, Efren

L'Italia Scacchistica, 1995

8/3K1Nb1/4P1p1/1p1N1k2/6p1/4pP1n/1rn5/B3Q3

#2

7 + 9


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qxg4#
      • 1...gxf3
        • 2.Sd6#
      • 1...Rb4
        • 2.Se7#
      • 1...Sf2
        • 2.Qf4#
      • 1...g5!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxg4#
      • 1...gxf3
        • 2.Se7#
      • 1...g5
        • 2.Qh7#
      • 1...Rb4
        • 2.Sd6#
      • 1...Sf2
        • 2.Qg5#
      • 1...g3
        • 2.Se7#
        • 2.Qxh3#
        • 2.Qe4#
        • 2.Qg4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(e)
      • Vars
        • P(e);XP(C)::S(G)
        • R(a);::S(D)
        • S(d);N_GUARD::QAR1(B)
      • Refutation
        • P(h);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(e)
    • Vars
      • P(e);XP(C)::S(D)
      • P(h);OGATEB::QAB(B)
      • R(a);::S(G)
      • S(d);N_GUARD::QAR1(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).