MESON Chess Problem Database

Problem Display
PID: 190038 (2b5/2Q5/r3k3/8/3p1R2/2nN1P2/4p2K/8 w - - 0 1)

van Dijk, Johannes

De Schaakcourant, 1913

2b5/2Q5/r3k3/8/3p1R2/2nN1P2/4p2K/8

#2

5 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qf7#
    • 1...Bd7
      • 2.Qe5#
    • 1...Sd5
      • 2.Sc5#
  • Tries
    • 1.Rf6+?
      • 1...Kd5
        • 2.Sb4#
        • 2.Sf4#
        • 2.Qc5#
      • 1...Kxf6!
    • 1.Rf7?
      • threat
        • 2.Sf4#
      • 1...Kd5
        • 2.Sf4#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Sd5
        • 2.Sc5#
      • 1...Rd6!
  • Keys
    • 1.Rf8!
      • threat
        • 2.Sf4#
      • 1...Kd5
        • 2.Sf4#
      • 1...Bd7
        • 2.Qe5#
      • 1...Rd6
        • 2.Qf7#
      • 1...Sd5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::QAB1(E)
    • B(f);SBLOCK::QAR1(E)
    • S(b);SBLOCK::S(B)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(e);P-FLIGHT,XR(D)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • K(e);S_FLIGHT::S(B)
        • B(f);N_GUARD::QAB1(E),XB(f)
        • S(b);SBLOCK::S(B)
      • Refutation
        • R(d);
  • Actual
    • R(D);
    • Threat
      • S(B)
    • Vars
      • K(e);S_FLIGHT::S(B)
      • B(f);SBLOCK::QAR1(E)
      • R(d);SBLOCK::QAB1(E)
      • S(b);SBLOCK::S(B)
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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).