MESON Chess Problem Database

Problem Display
PID: 121387 (2Q3n1/2PK3b/1p3pP1/1p1k1P2/1r1pNp2/3r4/6P1/8 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Deutsche Schachzeitung, 1907

2Q3n1/2PK3b/1p3pP1/1p1k1P2/1r1pNp2/3r4/6P1/8

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qf7#
        • 2.Qe6#
      • 1...Se7!
    • 1.Qxg8+?
      • 1...Kxe4
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Bxg8!
  • Keys
    • 1.Kd8!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kc6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Refutation
        • S(j);
    • Try
      • Q(G);CHECK,XS(j)
      • Vars
        • K(f);S_FLIGHT,XS(B)::QAR2(G)
        • K(f);P-FLIGHT::QAR1(G)
      • Refutation
        • B(i);XQ(G)
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • QAB1(G)
    • Vars
      • K(f);S_FLIGHT::QAB(G)
      • K(f);S_FLIGHT,XS(B)::QAR2(G)
      • K(f);P-FLIGHT::QAR1(G)
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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).