MESON Chess Problem Database

Problem Display
PID: 102690 (B7/3p4/1KnR2N1/3NpQ2/3k4/P1p1p1b1/2Prp3/8 w - - 0 1)

Oudot, Jean

Le Courrier des Echecs, 1957

B7/3p4/1KnR2N1/3NpQ2/3k4/P1p1p1b1/2Prp3/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sxe3#
    • 1...Rd3
      • 2.Qxd3#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Sb4#
        • 2.Sdf4#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Sde7#
      • 1...Bf4
        • 2.Sb4#
        • 2.Sdxf4#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Sde7#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Se7
        • 2.Sdxe7#
      • 1...e4
        • 2.Sdf4#
      • 1...Sa7+!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Sf6#
      • 1...Kc4
        • 2.Sxe3#
      • 1...Ke4
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Se7
        • 2.Sdxe7#
      • 1...e4
        • 2.Sdf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(f);P-FLIGHT::S(C),XP(d)
    • R(a);N_GUARD::QAR1(D),XR(a)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • DUALS(6)
      • Vars
        • S(h);::R(F)+S(C),XS(h)
        • P(g);::R(F)+S(C)
      • Refutation
        • S(h);CHECK
  • Actual
    • Q(D);
    • Threat
      • R(F)+S(C)
    • Vars
      • K(f);P-FLIGHT::QAB(D)+S(C),DCHECK,XP(d)
      • K(f);P-FLIGHT::S(C),XP(c)
      • S(h);::R(F)+S(C),XS(h)
      • P(g);SBLOCK::R(F)+S(C)
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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).