MESON Chess Problem Database

Problem Display
PID: 30935 (4N3/5n2/6p1/5k2/7p/4PN1p/3Q3K/3B4 w - - 0 1)

Takala, Aarne

Ajan Sana, 1931

4N3/5n2/6p1/5k2/7p/4PN1p/3Q3K/3B4

#2

6 + 5

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1947

SOLUTION

  • SOUND
  • Tries
    • 1.Sg7+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kg4
        • 2.Qb4#
        • 2.Qd4#
        • 2.Qd7#
      • 1...Kf6!
    • 1.Qc2+?
      • 1...Kg4
        • 2.Sf6#
      • 1...Ke6!
    • 1.Qd3+?
      • 1...Kg4
        • 2.Sf6#
      • 1...Ke6!
    • 1.Qd5+?
      • 1...Kg4
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sg5#
        • 2.Sf6#
      • 1...Se5!
  • Keys
    • 1.Sg5!
      • 1...Ke5
        • 2.Qa5#
      • 1...Kxg5
        • 2.e4#
      • 1...Sxg5
        • 2.Qd5#
      • 1...Se5
        • 2.e4#
      • 1...Sd6
        • 2.Qd5#
      • 1...Sh6
        • 2.Qa5#
        • 2.Qd5#
      • 1...Sd8
        • 2.Qa5#
        • 2.Qd5#
      • 1...Sh8
        • 2.Qa5#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • S(E);
    • Vars
      • K(c);P-FLIGHT::QAR(B)
      • K(c);P-FLIGHT,XS(E)::QAB(B)+P(D)
      • S(e);N_GUARD,SBLOCK,XS(E)::QAR2(B)
      • S(e);SBLOCK::P(D)
      • S(e);N_GUARD::QAR2(B)
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).