MESON Chess Problem Database

Problem Display
PID: 193576 (8/7B/1N3n2/1p2kn2/1B4p1/2P3P1/Q2N3K/8 w - - 0 1)

Faber, R

Oprechte Haarlemsche Courant, 1915

8/7B/1N3n2/1p2kn2/1B4p1/2P3P1/Q2N3K/8

#2

8 + 5

6490 yacpdb 2019
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sd7#
    • 1...Sh5
      • 2.Sd7#
    • 1...Sd7
      • 2.Sxd7#
    • 1...Sxh7
      • 2.Sd7#
    • 1...Se8
      • 2.Sd7#
    • 1...Sg8
      • 2.Sd7#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Qe2#
      • 1...gxf3!
  • Keys
    • 1.Se4!
      • 1...Kxe4
        • 2.Qe2#
      • 1...Sxg3
        • 2.Bd6#
      • 1...Sxe4
        • 2.Sd7#
      • 1...Sxh7
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Se3
        • 2.Bd6#
      • 1...Sd4
        • 2.Bd6#
      • 1...Sh4
        • 2.Bd6#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sh6
        • 2.Bd6#
      • 1...Se7
        • 2.Bd6#
      • 1...Sg7
        • 2.Bd6#
      • 1...Sh5
        • 2.Qd5#
      • 1...Sd7
        • 2.Qd5#
      • 1...Se8
        • 2.Qd5#
      • 1...Sg8
        • 2.Qd5#

Anticipated by 223022(1886)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::S(G)
    • S(e);N_GUARD::S(G),XS(e)
    • S(e);N_GUARD,XB(H)::S(G)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(d)::QAR2(A)
      • Refutation
        • P(a);XS(B)
  • Actual
    • S(B);
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINS(d),XS(B)::QAR2(A)
      • S(d);N_GUARD,XP(E)::B(F)
      • S(e);N_GUARD,SBLOCK,XS(B)::S(G)
      • S(e);N_GUARD,XB(H)::QAR1(A)
      • S(e);N_GUARD::QAR1(A),XS(e)
      • S(d);N_GUARD::B(F)
      • S(d);N_GUARD::B(F),XS(d)
      • S(e);N_GUARD::QAR1(A)
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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).