MESON Chess Problem Database

Problem Display
PID: 174247 (8/3pB1K1/4p3/4k3/1N1pppP1/8/6Qb/8 w - - 0 1)

Buchner, Rudolf

Arbeiter Schachzeitung, 1927

8/3pB1K1/4p3/4k3/1N1pppP1/8/6Qb/8

#2

5 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qb2#
    • 1...e3
      • 2.Sd3#
    • 1...f3
      • 2.Qxh2#
    • 1...d5
      • 2.Sc6#
    • 1...d6
      • 2.Bf6#
  • Tries
    • 1.Qxh2?
      • threat
        • 2.Qh5#
      • 1...d3
        • 2.Qb2#
      • 1...e3!
  • Keys
    • 1.Qh1!
      • 1...d3
        • 2.Qa1#
      • 1...f3
        • 2.Qxh2#
      • 1...Bg1
        • 2.Qh5#
      • 1...Bg3
        • 2.Qh5#
      • 1...e3
        • 2.Sd3#
      • 1...d5
        • 2.Sc6#
      • 1...d6
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAB(A)
    • P(c);N_GUARD::S(B)
    • P(d);OGATEB::QAB(A),XB(a)
    • P(g);N_GUARD,SBLOCK::S(B)
    • P(g);SBLOCK::B(D)
  • Tries
    • Try
      • Q(A);P_PINP(d),XB(a)
      • Threat
        • QAR(A)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATEB::QAB(A)
      • P(d);OGATEB::QAB(A),XB(a)
      • B(a);OGATE::QAR(A)
      • P(c);N_GUARD::S(B)
      • P(g);N_GUARD,SBLOCK::S(B)
      • P(g);SBLOCK::B(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).