p>

<table class="downloads">
<tr>
<th>Start Index</th>
<th>End Index</th>
<th>Solved</th>
<th>Impossible</th>
<th>Intractable</th>
</tr>

<tr>
<td>1</td>
<td>32,000</td>
<td>25,381</td>
<td>6,619</td>
<td>0</td>
</tr>

<tr>
<td>32,001</td>
<td>50,000</td>
<td>14,302</td>
<td>3,698</td>
<td>0</td>
</tr>

<tr>
<td>50,001</td>
<td>100,000</td>
<td>39,775</td>
<td>10,225</td>
<td>0</td>
</tr>

<tr>
<td>100,001</td>
<td>400,000</td>
<td>238,415</td>
<td>61,584</td>
<td>1 (No. 384243)</td>
</tr>

<tr>
<td colspa