\documentclass{standalone}

\usepackage{tikz}
\usepackage{shapes}

\begin{document}
\begin{tikzpicture}
  \cross{teal}{(5,2)}
  \cross{teal}{(4,4)}
  \cross{teal}{(3,6)}
  \cross{teal}{(2,8)}
  \cross{teal}{(7,3)}
  \cross{teal}{(9,4)}
  \cross{teal}{(11,5)}
  \cross{teal}{(10,7)}
  \cross{teal}{(9,9)}
  \cross{teal}{(8,11)}
  \cross{teal}{(6,10)}
  \cross{teal}{(4,9)}

  \cross{green}{(6,6)}
  \cross{green}{(7,8)}

  \square{black}{(6,4)}
  \square{black}{(5,5)}
  \square{black}{(5,7)}
  \square{black}{(4,7)}
  \square{black}{(5,8)}
  \square{black}{(7,5)}
  \square{black}{(8,5)}
  \square{black}{(8,6)}
  \square{black}{(9,6)}
  \square{black}{(8,7)}

  \cross{teal}{(13, 6)}
  \cross{teal}{(12, 8)}
  \cross{teal}{(11,10)}
  \cross{teal}{(10,12)}
  \cross{teal}{(15, 7)}
  \cross{teal}{(17, 8)}
  \cross{teal}{(19, 9)}
  \cross{teal}{(18,11)}
  \cross{teal}{(17,13)}
  \cross{teal}{(16,15)}
  \cross{teal}{(14,14)}
  \cross{teal}{(12,13)}

  \cross{cyan}{(15,10)}
  \cross{cyan}{(13,11)}

  \square{black}{(14,8)}
  \square{black}{(14,9)}
  \square{black}{(13,9)}
  \square{black}{(16,9)}
  \square{black}{(17,10)}
  \square{black}{(16,11)}
  \square{black}{(16,12)}
  \square{black}{(15,12)}
  \square{black}{(14,12)}
  \square{black}{(15,13)}

\end{tikzpicture}
\end{document}