Understanding the power of the stacks is a transcendental poker topic since it affects all decisions in a way a beginner is not able to visualize, but that an expert completely understands and therefore, can take advantage of them. Apart from being the object of conquest, stacks have a special peculiarity: they are, at the same time, both ammunitions to attack and supplies to survive in this succession of playful battles. This dual characteristic about stacks is what makes them such an important, particular and paradoxical element. Therefore, according to many people, your own stacks and your opponents' ones set up the most important element of the game. It is more important than position and even more important than cards. In this volume, we will deal with the implications of this topic in depth. And of course you are invited to join us in this in-depth journey.