MESON Chess Problem Database

Problem Display
PID: 174234 (B3R3/6pR/5p2/4N3/pK1kNp2/4np2/4b3/3n2Q1 w - - 0 1)

Buchner, Rudolf

Promadas, 1930

B3R3/6pR/5p2/4N3/pK1kNp2/4np2/4b3/3n2Q1

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Sxf3#
    • 1...Sf2
      • 2.Qa1#
    • 1...fxe5
      • 2.Rd8#
    • 1...g5
      • 2.Rd7#
    • 1...g6
      • 2.Rd7#
  • Keys
    • 1.Sg3!
      • threat
        • 2.Sf5#
      • 1...fxg3
        • 2.Rh4#
      • 1...fxe5
        • 2.Rd8#
      • 1...Bd3
        • 2.Sxf3#
      • 1...Sf2
        • 2.Qa1#
      • 1...f2
        • 2.Sxe2#
      • 1...f5
        • 2.Sxf5#
      • 1...g6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);N_GUARD,SBLOCK::S(D),XP(d)
    • S(a);N_SPINS(c),OGATE::QAB(A)
    • P(h);SBLOCK,XS(D)::R(G)
    • P(i);OGATE::R(E)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • P(g);OGATEB,XS(C)::R(E)
      • P(h);SBLOCK,XS(D)::R(G)
      • B(b);N_GUARD,SBLOCK::S(D),XP(d)
      • S(a);N_SPINS(c),OGATE::QAB(A)
      • P(d);N_GUARD,N_SPINS(c)::S(C),XB(b)
      • P(h);::S(C),XP(h)
      • P(i);OGATE::R(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).