MESON Chess Problem Database

Problem Display
PID: 82042 (B1b5/2Q5/1p1n1N2/b7/3pP3/3nk3/1p2P1RB/1N4K1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 1949

B1b5/2Q5/1p1n1N2/b7/3pP3/3nk3/1p2P1RB/1N4K1

#2

9 + 8

6490 yacpdb 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Sxg4#
    • 1...Ba6
      • 2.Sg4#
    • 1...Sc4
      • 2.Qg3#
    • 1...Sxe4
      • 2.Sd5#
    • 1...Sb5
      • 2.Qg3#
    • 1...Sf5
      • 2.Sg4#
    • 1...Sb7
      • 2.Qg3#
    • 1...Sf7
      • 2.Qg3#
    • 1...Se8
      • 2.Qg3#
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxd3#
      • 1...Ba6
        • 2.Sg4#
      • 1...Sc1
        • 2.Sd5#
      • 1...Se1
        • 2.Sd5#
      • 1...Sf2
        • 2.Sd5#
      • 1...Sb4
        • 2.Qd2#
      • 1...Sf4
        • 2.Rg3#
      • 1...Sc5
        • 2.Sd5#
      • 1...Se5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 8
  • Sets
    • B(h);N_GUARD::S(G),XB(h)
    • B(h);N_GUARD::S(G)
    • S(g);OGATE::QAR2(H)
    • S(g);SBLOCK,XP(F)::S(G)
    • S(g);S_CUTB(h)::S(G)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XS(b)
    • Vars
      • B(h);N_GUARD::S(G)
      • S(b);::S(G)
      • S(b);S_CUTB(e)::QAB1(H)
      • S(b);SBLOCK::R(D)
HTML5 logo

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).