MESON Chess Problem Database

Problem Display
PID: 218531 (3n1N2/3B4/1pppp2Q/1P1k1PP1/2p4p/2PP4/3K4/8 w - - 0 1)

Courtin, GE

Cincinnati Commercial, 1881

3n1N2/3B4/1pppp2Q/1P1k1PP1/2p4p/2PP4/3K4/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe6+?
      • 1...Kc5
        • 2.Qxc4#
      • 1...Sxe6!
  • Keys
    • 1.Qxh4!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qxc4#
      • 1...Ke5
        • 2.Qe4#
      • 1...c5
        • 2.Qe4#
      • 1...e5
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK,XP(g)
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(G),XP(a)
      • Refutation
        • S(h);XQ(G)
  • Actual
    • Q(G);XP(b)
    • Threat
      • QAR1(G)
    • Vars
      • K(c);P-FLIGHT::QAR1(G),XP(a)
      • K(c);P-FLIGHT::QAR1(G)
      • P(e);SBLOCK::QAB1(G)
      • P(g);SBLOCK::QAB1(G),XP(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).