Loose pieces have a tendency to drop off the board when your opponent attacks and captures them.
If you have pieces which are not guarded by other pieces, they can form the basis of tactical combinations.
This week’s problem sees Tal using the undefended Bishop on e6 as something he can base his kingside attack upon.
What did Tal, as White,play?
The solution to last Monday’s problem is that White plays 1. Qxa5!