MESON Chess Problem Database

Problem Display
PID: 190089 (qb6/rb2B3/1n6/7R/p1p2k2/K6R/5NP1/8 w - - 0 1)

van Dijk, Johannes

Magyar Sakkvilag, 1913

qb6/rb2B3/1n6/7R/p1p2k2/K6R/5NP1/8

#2

6 + 8

84 De Maasbode 1914
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6+
      • 2.Bxd6#
    • 1...Sd5
      • 2.Rf3#
  • Tries
    • 1.Bb4?
      • threat
        • 2.Bd2#
      • 1...Bd6
        • 2.Bxd6#
      • 1...Sd5
        • 2.Rf3#
      • 1...c3!
    • 1.Bf8?
      • threat
        • 2.Bh6#
      • 1...Bd6+
        • 2.Bxd6#
      • 1...Ra5!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Be3#
      • 1...Bf3
        • 2.g3#
      • 1...Bd6
        • 2.Bxd6#
      • 1...Sd5
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(h);CHECK,N_GUARD::B(F),XB(h)
    • S(d);S_CUTB(f)::R1(D)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • B(h);N_GUARD,P_PINB(F)::B(F),XB(h)
        • S(d);S_CUTB(f)::R1(D)
      • Refutation
        • P(b);
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • B(h);CHECK,N_GUARD::B(F),XB(h)
      • Refutation
        • R(e);
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • B(f);SBLOCK::P(B)
      • B(h);N_GUARD,P_PINB(F)::B(F),XB(h)
      • S(d);S_CUTB(f)::R1(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).