MESON Chess Problem Database

Problem Display
PID: 206962 (qRr5/1n6/b3N3/pn2Q3/Pk1pN3/1Pp5/K7/8 w - - 0 1)

Honti, Jozsef

Il Problema, 1934

qRr5/1n6/b3N3/pn2Q3/Pk1pN3/1Pp5/K7/8

#2

7 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.Qd6#
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxd4#
  • Tries
    • 1.Qxd4+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...Sxd4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sd3#
        • 2.Sd5#
      • 1...Sa3
        • 2.Sd5#
      • 1...Rc5
        • 2.Sd3#
      • 1...Rd8
        • 2.Sd3#
      • 1...S5d6
        • 2.Sd5#
      • 1...Sa7
        • 2.Sd5#
      • 1...Sc7
        • 2.Qd6#
        • 2.Qc5#
        • 2.Qe7#
      • 1...Sc5
        • 2.Qxd4#
      • 1...S7d6
        • 2.Sd3#
      • 1...Sd8
        • 2.Sd3#
      • 1...d3
        • 2.Sxd3#
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(g);P_SPINS(e),S_CUTR(i)::QAR2(E),XP(c)
  • Tries
    • Try
      • Q(E);CHECK,XP(c)
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(E),XR(i)
      • Refutation
        • S(e);P_SPINS(g),XQ(E)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • S(e);P_SPINS(g)::S(F)
      • R(i);::S(F)
      • S(g);P_SPINS(e),S_CUTR(i)::QAR2(E),XP(c)
      • S(g);P_SPINS(e)::S(F)
HTML5 logo

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).