MESON Chess Problem Database

Problem Display
PID: 206607 (r4n2/5p2/2R3p1/1B2k3/1B6/2N1P3/8/5RNK w - - 0 1)

Handloser, Ralf Chris

Best Problems, 2020

r4n2/5p2/2R3p1/1B2k3/1B6/2N1P3/8/5RNK

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Bd6#
    • 1...f5
      • 2.Sf3#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Bd6#
      • 1...f5
        • 2.Sf3#
      • 1...Rd8!
    • 1.Rf5+?
      • 1...gxf5
        • 2.Sf3#
      • 1...Kxf5!
    • 1.Rc4?
      • threat
        • 2.Re4#
      • 1...Ke6
        • 2.Re4#
      • 1...f5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Sf3#
      • 1...Se6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(e);SBLOCK::B(F)
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • B(G);
      • Threat
        • B(F)
      • Vars
        • P(c);SBLOCK::S(B)
      • Refutation
        • R(d);
    • Try
      • R(A);CHECK
      • Vars
        • P(b);SBLOCK,XR(A)::S(B)
      • Refutation
        • K(a);P-FLIGHT,XR(A)
    • Try
      • R(H);
      • Threat
        • R1(H)
      • Vars
        • K(a);P-FLIGHT::R(H)
      • Refutation
        • P(c);
  • Actual
    • B(G);
    • Threat
      • S(B)
    • Vars
      • S(e);SBLOCK::B(F)
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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).