I have a table that is to big to fit in the page width, thus it is separated into two tables. The truth is that I only use one table but insert an empty row in the middle so that the columns stay aligned. Here's a reduced size example:

![enter image description here](https://i.stack.imgur.com/n6HCR.png)

The idea is to removed the double line from the last column in the first row, and the vertical line that separates the last column from the empty column in the second table. The lines are the ones inside the green ellipsis.

The code for the image is:

```
\begin{table}[t]
\centering
\begin{tabular}{c | c | r | r | r | r | r}
\multicolumn{2}{}{} & \multicolumn{3}{|c}{NS} & \multicolumn{2}{|c}{PV} 
\\
Game Phase & Depth & \multicolumn{1}{|c}{TNC} & \multicolumn{1}{|c}{\# Cutoffs} & \multicolumn{1}{|c}{\# Re-searches} & \multicolumn{1}{|c}{TNC} & \multicolumn{1}{|c}{Gain}
\\\hline\hline
\multirow{2}{*}{Opening} & 8 & 336 & 10 568 & 1 231 & 336 & 0.00
\\
& 12 & 6 871 & 246 028 & 5 520 & 6 871 & 0.00
\\\hline
\multirow{2}{*}{Middle Game} & 8 & 1 605 & 71 728 & 5 532 & 1 605 & 0.00
\\
& 12 & 43 167 & 2 811 969 & 30 219 & 43 167 & 0.00
\\
\multicolumn{7}{}{}
\\
\multicolumn{2}{}{} & \multicolumn{4}{|c}{Two Bounds}
\\
Game Phase & Depth & \multicolumn{1}{|c}{TNC} & \multicolumn{1}{|c}{\# Cutoffs} & \multicolumn{1}{|c}{\# Re-searches} & \multicolumn{1}{|c}{Gain}
\\\hline\hline
\multirow{2}{*}{Opening} & 8 & 334 & 10 436 & 1 232 & 0.58
\\
& 12 & 6 844 & 244 147 & 5 524 & 0.39
\\\cline{1-6}
\multirow{2}{*}{Middle Game} & 8 & 1 599 & 71 490 & 5 519 & 0.38
\\
& 12 & 42 957 & 2 796 029 & 30 011 & 0.48
\end{tabular}
\caption{example}
\label{tab:example}
\end{table}

```