MESON Chess Problem Database

Problem Display
PID: 119796 (1B3N2/7Q/3P1b1K/4kpp1/1N3n2/5P1p/2pPr3/8 w - - 0 1)

Daniel, Arthur William

2nd HM., Pravo lidu, 1911

1B3N2/7Q/3P1b1K/4kpp1/1N3n2/5P1p/2pPr3/8

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7+
      • 2.Qxg7#
    • 1...Bh8
      • 2.Qxh8#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qa1#
        • 2.d4#
        • 2.d7#
      • 1...Bg7+
        • 2.Qxg7#
      • 1...Rxd2
        • 2.Qe3#
      • 1...Be7
        • 2.Qa1#
      • 1...Bd8
        • 2.Qa1#
      • 1...Bh8
        • 2.Qa1#
      • 1...Sg2
        • 2.d7#
      • 1...Sd3
        • 2.d7#
      • 1...Sd5
        • 2.Sd3#
      • 1...Sh5
        • 2.d7#
      • 1...Se6
        • 2.Sg6#
      • 1...Sg6
        • 2.d7#
      • 1...c1Q
        • 2.d4#
      • 1...c1B
        • 2.d4#
        • 2.d7#
      • 1...c1R
        • 2.d4#
      • 1...Re1
        • 2.d4#
        • 2.d7#
      • 1...Re3
        • 2.Qxe3#
        • 2.d4#
        • 2.d7#
      • 1...Re4
        • 2.d7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • B(h);CHECK,OGATEB::QAB(F),XB(h)
    • B(h);OGATEB::QAB(F),XB(h)
  • Actual
    • Q(F);
    • Threat
      • DUALS(3)
    • Vars
      • B(h);CHECK,OGATEB::QAB(F),XB(h)
      • R(b);N_GUARD,XP(A)::QAR2(F)
      • B(h);::QAB(F)
      • S(d);::B(G)+P(D)
      • S(d);N_GUARD,SBLOCK::S(C)
      • S(d);N_GUARD,SBLOCK::S(H)
      • P(a);::P(A)
      • R(b);::B(G)+P(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).