MESON Chess Problem Database

Problem Display
PID: 49143 (4k3/2p1P3/1bp1NPp1/n3Nn1b/3P4/8/K7/Q7 w - - 0 1)

Koetsheid, Petrus Albertus

Source?, 1905

4k3/2p1P3/1bp1NPp1/n3Nn1b/3P4/8/K7/Q7

#2

7 + 8

204 Op de Hoogte 1907

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Sxc7#
    • 1...Bc5
      • 2.Sxc7#
    • 1...Ba7
      • 2.Sxc7#
    • 1...Se3
      • 2.Sg7#
    • 1...Sg3
      • 2.Sg7#
    • 1...Sxd4
      • 2.Sg7#
    • 1...Sh4
      • 2.Sg7#
    • 1...Sd6
      • 2.Sg7#
    • 1...Sh6
      • 2.Sg7#
    • 1...Sxe7
      • 2.f7#
    • 1...Sg7
      • 2.Sxg7#
  • Keys
    • 1.Qh1!
      • 1...Bxd4
        • 2.Sxc7#
      • 1...Sxd4
        • 2.Sg7#
      • 1...Sxe7
        • 2.f7#
      • 1...Be2
        • 2.Qh8#
      • 1...Bd1
        • 2.Qh8#
      • 1...Bf3
        • 2.Qh8#
      • 1...Bg4
        • 2.Qh8#
      • 1...Bc5
        • 2.Sxc7#
      • 1...Ba7
        • 2.Sxc7#
      • 1...Sb3
        • 2.Qxc6#
      • 1...Sc4
        • 2.Qxc6#
      • 1...Sb7
        • 2.Qxc6#
      • 1...Se3
        • 2.Sg7#
      • 1...Sg3
        • 2.Sg7#
      • 1...Sh4
        • 2.Sg7#
      • 1...Sd6
        • 2.Sg7#
      • 1...Sh6
        • 2.Sg7#
      • 1...Sg7
        • 2.Sxg7#
      • 1...c5
        • 2.Qa8#
      • 1...g5
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD,XP(C)::S(E),XP(g)
    • B(d);N_GUARD::S(E),XP(g)
    • S(b);N_GUARD::S(E)
    • S(b);N_GUARD,XP(C)::S(E)
    • S(b);SBLOCK,XP(G)::P(F)
    • S(b);N_GUARD::S(E),XS(b)
  • Actual
    • Q(A);
    • Vars
      • B(d);N_GUARD,XP(C)::S(E),XP(g)
      • S(b);N_GUARD,XP(C)::S(E)
      • S(b);SBLOCK,XP(G)::P(F)
      • B(c);OGATE::QAR(A)
      • B(d);N_GUARD::S(E),XP(g)
      • S(a);N_GUARD::QAB(A),XP(e)
      • S(b);N_GUARD::S(E)
      • S(b);N_GUARD::S(E),XS(b)
      • P(e);OGATE::QAR(A)
      • P(f);OGATEB::QAB(A),XB(c)
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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).