Monaco's tactical changes have been key to their success this season, with the team switching from a 4-3-3 formation to a more attacking 4-2-3-1 system with Ben Yedder in central striker role.

The 4-2-3-1 formation allows Monaco to play with two forwards who can operate in different areas of the pitch, while also providing space for midfielders to create chances. The central striker, in particular, is crucial in this formation as they provide support to the wingers and can be used as a target man or a creative player on the wing.

Ben Yedder has been integral to Monaco's success this season, scoring 16 goals and creating several assists. His goal-scoring ability and aerial ability make him a valuable asset for the team, especially when he plays centrally.

The switch to the 4-2-3-1 formation has also allowed Monaco to adapt to various opponents' strategies, as they can now adjust their tactics depending on the opposition. This flexibility is particularly important in the Champions League, where teams come from all over Europe and have different playing styles.

Overall, Monaco's tactical changes and the use of Ben Yedder in a central striker role have been instrumental in their success this season. As the club continues to compete at a high level, it will be interesting to see how they continue to evolve their tactics and lineup.