MESON Chess Problem Database

Problem Display
PID: 108325 (1Q6/4B3/2nrp3/7R/3k1N2/4Np2/3K4/8 w - - 0 1)

Gold, S?

Fanfulla da Lodi, 1886-1888

1Q6/4B3/2nrp3/7R/3k1N2/4Np2/3K4/8

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qxb4#
    • 1...Sa7
      • 2.Qb4#
    • 1...Sxe7
      • 2.Qb4#
    • 1...Sd8
      • 2.Qb4#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qd3#
        • 2.Qc4#
      • 1...e5
        • 2.Qc4#
      • 1...Sb4
        • 2.Qc4#
        • 2.Qxb4#
        • 2.Qe5#
      • 1...Sa5
        • 2.Qd3#
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Ke4+!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Sd3#
      • 1...Ke4+
        • 2.Sd3#
      • 1...Kc5+
        • 2.Sd3#
      • 1...Ke5+
        • 2.Sd3#
      • 1...e5
        • 2.Se6#
      • 1...Se5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • S(c);N_GUARD::QAR2(F),XS(c)
    • S(c);N_GUARD::QAR2(F)
    • S(c);N_GUARD,XB(E)::QAR2(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAR1(F)
        • S(c);N_GUARD::QAB1(F),XS(c)
      • Refutation
        • K(b);CHECK,P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • R(D)+S(C)
    • Vars
      • K(b);CHECK,P-FLIGHT::R(D)+S(C)
      • K(b);CHECK,P_SPINR(d),S_FLIGHT::S(C)
      • P(e);SBLOCK::R(D)+S(C),DCHECK
      • S(c);SBLOCK::R(D)+S(C),DCHECK,XP(e)
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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).