MESON Chess Problem Database

Problem Display
PID: 181777 (8/3nB3/4p3/1K1k4/8/5P2/8/6Q1 w - - 0 1)

Fraisse, A

La Strategie, 1905

8/3nB3/4p3/1K1k4/8/5P2/8/6Q1

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qxc5#
    • 1...Se5
      • 2.Qc5#
    • 1...Sb6
      • 2.Qc5#
    • 1...Sf6
      • 2.Qc5#
    • 1...Sb8
      • 2.Qc5#
    • 1...Sf8
      • 2.Qc5#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qe4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sf6
        • 2.Qc5#
      • 1...e5!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qg5#
      • 1...Sxc5
        • 2.Qxc5#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD::QAR1(A),XS(c)
    • S(c);N_GUARD,SBLOCK::QAR1(A)
    • S(c);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(c)
        • S(c);N_GUARD::QAR1(A)
      • Refutation
        • P(b);
  • Actual
    • B(D);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • S(c);OGATE,XB(D)::QAR1(A),XS(c)
      • P(b);OGATEB,SBLOCK::QAB(A)
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).