MESON Chess Problem Database

Problem Display
PID: 195185 (5N1Q/p2N4/1P2pb1q/rBBk4/1P4n1/p2P4/Kn6/8 w - - 0 1)

Loedel, Juan Eduardo

Brisbane Courier, 1918

5N1Q/p2N4/1P2pb1q/rBBk4/1P4n1/p2P4/Kn6/8

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.Qh1#
    • 1...Qg7
      • 2.Qh1#
    • 1...Qxf8
      • 2.Qh1#
    • 1...Qh1
      • 2.Qxh1#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bh4
      • 2.Qd4#
    • 1...Bg5
      • 2.Qd4#
    • 1...Be7
      • 2.Qd4#
    • 1...Bd8
      • 2.Qd4#
    • 1...e5
      • 2.Qg8#
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qa8#
      • 1...Qxh8
        • 2.Sf4#
      • 1...Bxh8
        • 2.Se7#
      • 1...axb6
        • 2.Sxb6#
      • 1...e5
        • 2.Qg8#
      • 1...Qf8
        • 2.Sf4#
        • 2.Qh1#
      • 1...Bd8
        • 2.Qd4#
      • 1...Se5
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(h);OGATE::QAB(I)
    • Q(h);OGATE,XS(H)::QAB(I)
    • Q(h);OGATE::QAB(I),XQ(h)
    • B(g);OGATE::QAR1(I),XB(g)
    • B(g);OGATE::QAR1(I)
    • P(f);OGATEB::QAB(I)
  • Actual
    • S(H);
    • Threat
      • QAB(I)
    • Vars
      • Q(h);N_GUARD,XQ(I)::S(H)
      • B(g);N_GUARD,XQ(I)::S(H)
      • P(i);XP(F)::S(G),XP(i)
      • P(f);OGATEB::QAB(I)
      • B(g);OGATE::QAR1(I)
      • S(c);N_GUARD::S(G),XB(g)
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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).