diff --git a/diagram_paths.tex b/diagram_paths.tex
new file mode 100644
index 0000000000000000000000000000000000000000..f86b4af62ba8ef2945f730dfafd96407e80e8036
--- /dev/null
+++ b/diagram_paths.tex
@@ -0,0 +1,66 @@
+\documentclass{standalone}
+\usepackage[T1]{fontenc}
+\usepackage{amsmath}
+\usepackage{amsfonts}
+\usepackage{parskip}
+\usepackage{marvosym} %Lightning symbol
+\usepackage[usenames,dvipsnames]{color}
+\usepackage[hidelinks]{hyperref}
+\renewcommand*{\familydefault}{\sfdefault}
+
+\usepackage{bbm} %For \mathbbm{1}
+%\usepackage{bbold}
+\usepackage{tikz}
+
+\begin{document}
+
+\begin{tikzpicture}
+    \draw[step=1cm,gray,dotted] (-0.9,-0.9) grid (8.9,6.9);
+    \foreach \x in {0,...,7} {
+        \foreach \y in {0,...,5} {
+            \draw[->] (\x,\y) -- (\x+0.9,\y);
+            \draw[->] (\x,\y) -- (\x,\y+0.9);
+        }
+        \draw [->] (\x,6) -- (\x+0.9,6);
+    }
+    \foreach \y in {0,...,5}
+        \draw [->] (8,\y) -- (8,\y+0.9);
+
+    \draw (8,-0.2) node {$n_1$};
+    \draw (-0.2,6) node {$n_2$};
+
+    \draw (4,-0.5) node {step of path 1};
+    \node[rotate=90,anchor=south,xshift=3cm,yshift=0.5cm] {step of path 2};
+
+    \draw[fill,red] (0,0) circle (0.08);
+    \draw[fill,red] (8,6) circle (0.08);
+
+    \def\x{5};
+    \def\y{3};
+    \draw[fill,black] (\x,\y) circle (0.07);
+    \draw[fill=white,draw=black] (\x+0.25,\y-0.26) rectangle +(0.5,0.5);
+    \draw[fill=white,draw=black] (\x-0.50,\y+0.26) rectangle +(1.0,0.5);
+    \draw (\x+0.5,\y) node {$p_j$};
+    \draw (\x,\y+0.5) node {$1-p_j$};
+
+    \def\x{2};
+    \def\y{2};
+    \draw[fill,black] (\x,\y) circle (0.07);
+    \draw[fill=white,draw=black] (\x+0.25,\y-0.26) rectangle +(0.5,0.5);
+    \draw[fill=white,draw=black] (\x-0.50,\y+0.26) rectangle +(1.0,0.5);
+    \draw (\x+0.5,\y) node {$p_i$};
+    \draw (\x,\y+0.5) node {$1-p_i$};
+
+    \def\x{8};
+    \def\y{1};
+    \draw[fill,black] (\x,\y) circle (0.07);
+    \draw[fill=white,draw=black] (\x-0.25,\y+0.26) rectangle +(0.5,0.5);
+    \draw (\x,\y+0.5) node {$1$};
+
+    \def\x{3};
+    \def\y{6};
+    \draw[fill,black] (\x,\y) circle (0.07);
+    \draw[fill=white,draw=black] (\x+0.25,\y-0.25) rectangle +(0.5,0.5);
+    \draw (\x+0.5,\y) node {$1$};
+\end{tikzpicture}
+\end{document}