MESON Chess Problem Database

Problem Display
PID: 21123 (8/2p2p2/2K1pp2/4k3/8/3Pp1P1/4P1n1/5Q2 w - - 0 1)

Weenink, Henri Gerard Maria

Algemeen Handelsblad, 1917

8/2p2p2/2K1pp2/4k3/8/3Pp1P1/4P1n1/5Q2

#2

5 + 7

16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qa1#
    • 1...Se1
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...f5
      • 2.Qa1#
  • Tries
    • 1.Kc5?
      • 1...Sf4
        • 2.Qxf4#
      • 1...f5
        • 2.Qa1#
      • 1...Se1
        • 2.Qf4#
      • 1...Sh4
        • 2.Qf4#
      • 1...c6!
  • Keys
    • 1.Qh1!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf5
        • 2.Qh5#
      • 1...Se1
        • 2.Qe4#
      • 1...Sf4
        • 2.Qe4#
      • 1...Sh4
        • 2.Qe4#
      • 1...f5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(A)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(e);SBLOCK::QAB(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • P(e);SBLOCK::QAB(A)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • P(f);
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • K(c);P-FLIGHT::QAR2(A)
      • S(a);OGATE::QAR1(A)
      • P(e);SBLOCK::QAB(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).