MESON Chess Problem Database

Problem Display
PID: 202431 (5n2/4pN2/R7/3k4/3B1R2/1KnBp1p1/1b6/2r2bq1 w - - 0 1)

van Dijk, Johannes

Noord-Hollandsch Dagblad, 1923

5n2/4pN2/R7/3k4/3B1R2/1KnBp1p1/1b6/2r2bq1

#2

6 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Bc4#
    • 1...Bh3
      • 2.Bc4#
    • 1...e2
      • 2.Bc4#
    • 1...e5
      • 2.Rd6#
    • 1...e6
      • 2.Rd6#
  • Tries
    • 1.Rf5+?
      • 1...e5
        • 2.Rd6#
      • 1...Kxd4!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Rd4#
      • 1...Sb1
        • 2.Be4#
      • 1...Sd1
        • 2.Be4#
      • 1...Sa2
        • 2.Be4#
      • 1...Se2
        • 2.Be4#
      • 1...Sa4
        • 2.Be4#
      • 1...Se4
        • 2.Bxe4#
      • 1...Sb5
        • 2.Be4#
      • 1...Se6
        • 2.Rf5#
      • 1...e2
        • 2.Bc4#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::B(B)
    • P(f);S_CUTB(b)::B(B)
    • P(i);N_GUARD::R1(E)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(i);P_SPINP(i)::R1(E)
      • Refutation
        • K(h);P-FLIGHT,XB(C)
  • Actual
    • B(C);
    • Threat
      • R1(D)
    • Vars
      • S(e);N_GUARD::B(B)
      • S(e);N_GUARD::B(B),XS(e)
      • S(j);S_CUTP(i)::R(D)
      • P(f);S_CUTB(b)::B(B)
      • P(i);N_GUARD::R1(E)
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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).