MESON Chess Problem Database

Problem Display
PID: 278832 (R3K3/3p1p1Q/8/1PNkBb2/3P4/4n3/3N4/5r2 w - - 0 1)

Bielefeldt, German

Cabrera, Virginio

Best Problems, 2024

R3K3/3p1p1Q/8/1PNkBb2/3P4/4n3/3N4/5r2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bg4
      • 2.Qe4#
    • 1...Be6
      • 2.Qe4#
  • Tries
    • 1.Sa6?
      • threat
        • 2.Sc7#
      • 1...Ke6
        • 2.Sc7#
        • 2.Qxf7#
      • 1...Rc1!
    • 1.Ra6?
      • threat
        • 2.Rd6#
      • 1...d6
        • 2.Rxd6#
      • 1...Sc4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.Qxf7#
      • 1...Bxe6
        • 2.Qe4#
      • 1...dxe6
        • 2.Rd8#
      • 1...fxe6
        • 2.Qxd7#
      • 1...Rc1
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(d);OGATE::QAB1(F)
    • B(d);OGATE::QAB1(F),XB(d)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Refutation
        • R(a);
    • Try
      • R(G);
      • Threat
        • R1(G)
      • Vars
        • P(e);::R1(G),XP(e)
      • Refutation
        • S(b);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB1(F),XP(f)
      • B(d);OGATE,SBLOCK,XS(D)::QAB1(F)
      • P(e);OGATEB,SBLOCK,XS(D)::R(G)
      • P(f);OGATE,XS(D)::QAR2(F),XP(e)
      • R(a);N_GUARD::S(D)
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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).