MESON Chess Problem Database

Problem Display
PID: 121442 (b7/8/pNp5/6K1/8/1Npk4/6Q1/8 w - - 0 1)

Kockelkorn, Carl

Kohtz, Johannes

Zum Feierabend, 1876

b7/8/pNp5/6K1/8/1Npk4/6Q1/8

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qf3#
  • Tries
    • 1.Kf4?
      • threat
        • 2.Qe4#
      • 1...c2
        • 2.Qf3#
        • 2.Qd2#
      • 1...c5!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qe2#
      • 1...cxd2!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Sc5#
      • 1...Ke4
        • 2.Qe2#
      • 1...c2
        • 2.Qf3#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR2(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAB1(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • K(b);S_FLIGHT::QAR2(A)
      • P(a);SBLOCK::QAR2(A)
      • P(d);::S(B),XP(d)
HTML5 logo

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).