MESON Chess Problem Database

Problem Display
PID: 120159 (4n3/4p1n1/1N2p2N/4k1Pp/3p3p/Q2P3K/5P2/8 w - - 0 1)

Beck, Antonin

Casopis ceskoslovenskych sachistu, 1925

4n3/4p1n1/1N2p2N/4k1Pp/3p3p/Q2P3K/5P2/8

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf4!
  • Keys
    • 1.Qc1!
      • 1...Kd6
        • 2.Sf7#
      • 1...Sf5
        • 2.Sf7#
      • 1...Sd6
        • 2.f4#
      • 1...Sf6
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#

There are these versions: 205500

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::S(G)
      • S(g);SBLOCK::S(G)
      • S(h);SBLOCK::P(A)
      • S(h);N_GUARD::QAB(B)
      • S(h);N_GUARD::QAB(B),XS(h)
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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).