MESON Chess Problem Database

Problem Display
PID: 43915 (8/8/3b2pp/3n3q/1p6/1K1N4/R2Pk1PR/1Q4B1 w - - 0 1)

Gavrilov, Constantin Grigorievich

Het Schaakleven, 1931

8/8/3b2pp/3n3q/1p6/1K1N4/R2Pk1PR/1Q4B1

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.dxc3#
    • 1...Se3
      • 2.dxe3#
  • Tries
    • 1.Sf4+?
      • 1...Sxf4
        • 2.d3#
        • 2.d4#
      • 1...Bxf4!
  • Keys
    • 1.Se5!
      • threat
        • 2.d3#
        • 2.d4#
      • 1...Qf3+
        • 2.d3#
        • 2.gxf3#
      • 1...Qh3+
        • 2.d3#
        • 2.gxh3#
      • 1...Qxe5
        • 2.d4#
      • 1...Bxe5
        • 2.d4#
      • 1...Qf5
        • 2.d3#
      • 1...Qg5
        • 2.g3#
        • 2.g4#
      • 1...Sc3
        • 2.dxc3#
      • 1...Se3
        • 2.dxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::R(C)+P(D),XS(c)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • B(e);XS(H)
  • Actual
    • S(H);
    • Threat
      • DUALS(2)
    • Vars
      • Q(d);XS(H)::R(C)+P(D)
      • B(e);XS(H)::R(C)+P(D)
      • Q(d);::R(C)+P(D)
      • S(c);OGATE::R(C)+P(D),XS(c)
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).