For a beginner, the one-on-one game is often the most difficult: the impact of luck is minimal. But heads-up poker is what experienced players consider true poker to be. When your chip sizes are roughly equal to or close to each other, you are both in the "comfort zone." When your stack significantly exceeds your opponent's stack, you are in the "dominant zone" and your opponent is in the "danger zone". There is also the fourth zone, when you or your opponent have already lost practically all the chips, but are still in the game, although there is nothing to do but go all-in.Let's call this "dead zone". Your game should depend on the zone you are in. In the comfort zone, there is no point in making moves that affect a significant portion of your chips. Your job is to get the most out of strong hands and keep the pot small when you have a medium strength hand. Since it is very easy to enter the "danger zone" from this zone, after a wrong decision, try to withdraw the cards whenever you are not sure of victory; You won't lose much, but you will have enough chips to knock your opponent down in the "danger zone" when the right situation arises.