MESON Chess Problem Database

Problem Display
PID: 196890 (5N2/4p3/Q2pBk1B/4N3/b3p3/K7/5n2/8 w - - 0 1)

Villaret, Albert

Deutsches Wochenschach, 1919

5N2/4p3/Q2pBk1B/4N3/b3p3/K7/5n2/8

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Sed7#
    • 1...Bc2
      • 2.Sed7#
    • 1...Bb3
      • 2.Sed7#
    • 1...Bd7
      • 2.Sexd7#
    • 1...Sd1
      • 2.Sg4#
    • 1...Sh1
      • 2.Sg4#
    • 1...Sd3
      • 2.Sg4#
    • 1...Sh3
      • 2.Sg4#
    • 1...Sg4
      • 2.Sxg4#
  • Keys
    • 1.Qf1!
      • threat
        • 2.Sg4#
      • 1...Kxe5
        • 2.Qa1#
      • 1...dxe5
        • 2.Qxf2#
      • 1...Bd1
        • 2.Sed7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • B(b);N_GUARD::S(B)
    • B(b);N_GUARD::S(B),XB(b)
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
  • Actual
    • Q(C);P_PINS(a)
    • Threat
      • S(B)
    • Vars
      • K(e);N_SPINS(a),OGATEB,S_FLIGHT,XS(B)::QAB(C)
      • P(d);SBLOCK,XS(B)::QAR(C),XS(a)
      • B(b);N_GUARD::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).