MESON Chess Problem Database

Problem Display
PID: 206927 (3N2bk/8/7K/4n3/6p1/3P2P1/8/7Q w - - 0 1)

Grosdemange, E

La Regence, 1850

3N2bk/8/7K/4n3/6p1/3P2P1/8/7Q

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kg5+?
      • 1...Kg7
        • 2.Qh6#
      • 1...Bh7!
  • Keys
    • 1.Qa8!
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Sxd3
        • 2.Sf7#
      • 1...Ba2
        • 2.Se6#
        • 2.Sf7#
      • 1...Bb3
        • 2.Se6#
        • 2.Sf7#
      • 1...Bc4
        • 2.Se6#
        • 2.Sf7#
      • 1...Bd5
        • 2.Sf7#
      • 1...Be6
        • 2.Sxe6#
        • 2.Sf7#
      • 1...Bf7
        • 2.Sxf7#
      • 1...Bh7
        • 2.Sf7#
      • 1...Sf3
        • 2.Sf7#
      • 1...Sc4
        • 2.Sf7#
      • 1...Sc6
        • 2.Sf7#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sd7
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);CHECK,S_FLIGHT
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • Q(A);
    • Vars
      • S(b);CHECK,N_GUARD::S(E),XS(b)
      • S(b);N_GUARD,XP(B)::S(E)
      • B(c);::QAR(A)+S(E),DCHECK
      • B(c);::QAR(A)+S(E),DCHECK,XB(c)
      • S(b);N_GUARD::S(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).