MESON Chess Problem Database

Problem Display
PID: 180467 (K7/2pp4/3bN1Q1/1Bpkp2R/p1p5/N7/2P3n1/8 w - - 0 1)

Lider, Valentin Viktorovich

Mat, 1976

K7/2pp4/3bN1Q1/1Bpkp2R/p1p5/N7/2P3n1/8

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Bxc4#
  • Tries
    • 1.Sxc4?
      • 1...dxe6
        • 2.Qd3#
      • 1...Be7
        • 2.Rxe5#
      • 1...Bf8
        • 2.Rxe5#
      • 1...Se1
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sf4
        • 2.Se3#
      • 1...Sh4
        • 2.Se3#
      • 1...c6
        • 2.Sb6#
      • 1...a3!
  • Keys
    • 1.c3!
      • 1...dxe6
        • 2.Qxg2#
      • 1...Be7
        • 2.Sxc7#
      • 1...Bf8
        • 2.Sxc7#
      • 1...Se1
        • 2.Sf4#
      • 1...Se3
        • 2.Sf4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sh4
        • 2.Sf4#
      • 1...c6
        • 2.Bxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(h);SBLOCK::B(C),XP(c)
  • Tries
    • Try
      • S(B);XP(c)
      • Vars
        • P(i);SBLOCK,XS(E)::QAR2(F)
        • B(g);N_GUARD::R1(D),XP(f)
        • S(a);N_GUARD::S(B)
        • S(a);N_GUARD::S(B),XS(a)
        • P(h);N_GUARD::S(B)
      • Refutation
        • P(b);
  • Actual
    • P(A);
    • Vars
      • P(i);SBLOCK,XS(E)::QAB(F),XS(a)
      • B(g);N_GUARD::S(E),XP(h)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • P(h);SBLOCK::B(C),XP(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).