MESON Chess Problem Database

Problem Display
PID: 63710 (5n2/4K2B/4pNb1/3pkN2/R1n5/4BR2/8/6b1 w - - 0 1)

Tikkanen, Tapani

3rd Prize, Suomen Shakki, 1961

5n2/4K2B/4pNb1/3pkN2/R1n5/4BR2/8/6b1

#2

7 + 7

117 Suomen Shakki 1985

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Bd4#
    • 1...Bh5
      • 2.Bf4#
    • 1...Bf7
      • 2.Bf4#
    • 1...Be8
      • 2.Bf4#
    • 1...Sb2
      • 2.Sg4#
    • 1...Sd2
      • 2.Sg4#
    • 1...Sa3
      • 2.Sg4#
    • 1...Sa5
      • 2.Sg4#
    • 1...Sb6
      • 2.Sg4#
    • 1...Sd6
      • 2.Sg4#
  • Tries
    • 1.Rxc4?
      • threat
        • 2.Sg4#
      • 1...Bxf5
        • 2.Bf4#
      • 1...exf5
        • 2.Bf4#
      • 1...Bh5
        • 2.Bf4#
      • 1...d4
        • 2.Rc5#
      • 1...dxc4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Be8
        • 2.Sg4#
      • 1...Sa5
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • B(a);N_GUARD::B(A)
    • B(f);::B(A)
    • S(b);::S(E)
  • Tries
    • Try
      • R(C);XS(b)
      • Threat
        • S(E)
      • Vars
        • B(f);XS(D)::B(A)
        • P(e);SBLOCK,XS(D)::B(A)
        • B(f);::B(A)
        • P(c);OGATEB::R(C)
      • Refutation
        • P(c);XR(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • B(f);::S(E)
      • S(b);::B(A)
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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).