MESON Chess Problem Database

Problem Display
PID: 206284 (8/8/3p2p1/4p3/2p1k3/1pP1N3/1p6/bK2RQ2 w - - 0 1)

Henke, Walter

Arbeiter Schachkalendar, 1925

8/8/3p2p1/4p3/2p1k3/1pP1N3/1p6/bK2RQ2

#2

5 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Sd1#
      • 2.Sc2#
      • 2.Sg2#
      • 2.Sxc4#
      • 2.Sg4#
      • 2.Sf5#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Qg2+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Kd3!
    • 1.Qf3+?
      • 1...Kd3
        • 2.Sf1#
      • 1...Kxf3!
  • Keys
    • 1.Qh3!
      • 1...Kd3
        • 2.Sf1#
      • 1...Kf4
        • 2.Qg4#
      • 1...d5
        • 2.Sg2#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(h);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR(C)+S(E)
      • Refutation
        • K(e);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(e);S_FLIGHT::QAR(C)+S(E)
      • K(e);P-FLIGHT::QAR1(C)
      • P(g);SBLOCK::R(B)+S(E)
      • P(h);N_GUARD::QAB1(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).