user-1: How many pieces would be needed in a chess set where all possibilities for promoted pieces are included if pawns are no longer used after they promote?  

user12449: Let's count.
Starting set

2 rooks
2 bishops
2 knights
1 queen
1 king
(8 pawns)

Max promotions

8 rooks
8 bishops
8 knights
8 queens

Total
In total you would need 40 pieces and 8 pawns for each color, so 96 units for black and white together.
Edited to bullet format to "look" better.

-1: <p>How many pieces would be needed in a chess set where all possibilities for promoted pieces are included if pawns are no longer used after they promote?  </p>
 12449: <p>Let's count.</p>
<h3>Starting set</h3>
<ul>
<li>2 rooks</li>
<li>2 bishops</li>
<li>2 knights</li>
<li>1 queen</li>
<li>1 king</li>
<li>(8 pawns)</li>
</ul>
<h3>Max promotions</h3>
<ul>
<li>8 rooks</li>
<li>8 bishops</li>
<li>8 knights</li>
<li>8 queens</li>
</ul>
<h3>Total</h3>
<p>In total you would need 40 pieces and 8 pawns for each color, so 96 units for black and white together.</p>
<p>Edited to bullet format to &quot;look&quot; better.</p>
