Problem Display
PID: 244851 (4r3/7p/3p4/1N3p2/4pk1K/7p/BQ6/4N3 w - - 0 1)

Gold, Samuel

Wiener Hausfrauen-Zeitung, 1893

4r3/7p/3p4/1N3p2/4pk1K/7p/BQ6/4N3

#2

5 + 7


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Re5
      • 2.Qf2#
  • Tries
    • 1.Sg2+?
      • 1...Kf3
        • 2.Sd4#
      • 1...hxg2!
    • 1.Sc7?
      • threat
        • 2.Sd5#
      • 1...Ke3
        • 2.Sd5#
      • 1...Re5
        • 2.Qf2#
      • 1...d5
        • 2.Sxd5#
      • 1...e3!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Qxd6#
      • 1...e3!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sd5#
      • 1...Ke3
        • 2.Sd5#
      • 1...Ke5
        • 2.Se2#
      • 1...Re5
        • 2.Qf2#
      • 1...e3
        • 2.Qh2#
      • 1...d5
        • 2.Sxd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK::QAR2(C)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);P-FLIGHT::S(E)
      • Refutation
        • P(a);XS(A)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(c);S_FLIGHT::S(E)
        • R(g);SBLOCK::QAR2(C)
        • P(e);::S(E),XP(e)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(C),XP(e)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);S_FLIGHT::S(E)
      • K(c);S_FLIGHT::QAB(C)+S(E)
      • R(g);SBLOCK::QAR2(C)
      • P(b);SBLOCK::QAB(C)
      • P(e);::S(E),XP(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).