MESON Chess Problem Database

Problem Display
PID: 186032 (6K1/2nN2Q1/7p/2P2p2/4pk1P/4p3/B1p3Pn/2Bb4 w - - 0 1)

Markwick, Frederick W

Sussex Chess Problem Fraternity, 1918

6K1/2nN2Q1/7p/2P2p2/4pk1P/4p3/B1p3Pn/2Bb4

#2

8 + 9

15 British Chess Magazine 1918
1509 Southend Times 1936
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.g3#
    • 1...Bg4
      • 2.Qe5#
    • 1...Sf3
      • 2.g3#
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.Qxh6+?
      • 1...Kg4
        • 2.Qg5#
      • 1...Kg3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qxc7#
      • 1...Ke5
        • 2.Sh5#
      • 1...Sg4
        • 2.Sh5#
      • 1...Sf3
        • 2.Sh5#
      • 1...Sb5
        • 2.Sd5#
      • 1...Sd5
        • 2.Sxd5#
      • 1...Sa6
        • 2.Sd5#
      • 1...Se6
        • 2.Sd5#
      • 1...Sa8
        • 2.Sd5#
      • 1...Se8
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • B(a);SBLOCK::P(C)
    • B(a);SBLOCK::QAB1(G)
    • S(c);SBLOCK::P(C)
    • P(h);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK,XP(h)
      • Vars
        • K(f);N_SPINP(d),P-FLIGHT::QAR1(G)
      • Refutation
        • K(f);N_SPINP(d),S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB(G),XS(i)
    • Vars
      • K(f);N_SPINP(d),S_FLIGHT::QAB(G)+S(F)
      • S(c);S_CUTB(a)::S(F)
      • S(i);N_GUARD::S(F)
      • S(i);N_GUARD::S(F),XS(i)
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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).