MESON Chess Problem Database

Problem Display
PID: 214727 (8/3K4/8/3k4/1PpppPp1/8/8/3Q4 w - - 0 1)

Barbe, Emanuel

Detroit Free Press, 1877

8/3K4/8/3k4/1PpppPp1/8/8/3Q4

#2

4 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qb3#
    • 1...e3
      • 2.Qh1#
    • 1...g3
      • 2.Qh5#
  • Tries
    • 1.Qe2?
      • 1...e3
        • 2.Qg2#
      • 1...c3
        • 2.Qb5#
        • 2.Qa2#
      • 1...g3
        • 2.Qh5#
      • 1...d3!
    • 1.Qa4?
      • threat
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qa5#
        • 2.Qa8#
      • 1...c3
        • 2.Qb3#
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qa2#
      • 1...e3
        • 2.Qc6#
        • 2.Qa8#
      • 1...d3!
    • 1.Qxg4?
      • threat
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qe6#
        • 2.Qg5#
        • 2.Qg8#
      • 1...c3
        • 2.Qe6#
        • 2.Qg8#
      • 1...e3
        • 2.Qf3#
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qg2#
      • 1...d3!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa5#
        • 2.Qa8#
      • 1...c3
        • 2.Qa2#
      • 1...e3
        • 2.Qh1#
        • 2.Qa8#
      • 1...d3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • P(a);OGATEB::QAB(A)
    • P(c);OGATEB::QAB(A)
    • P(d);OGATE::QAR(A)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(d);OGATE::QAR(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(4)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(b),XP(d)
      • Threat
        • DUALS(5)
      • Refutation
        • P(b);
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • DUALS(2)
    • Vars
      • P(a);OGATEB::QAB(A)
      • P(b);OGATE::QAR1(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).