Yu-Gi-Oh! » Rulings Q&A

When ending m1 does the turn player have to say which phase they are trying to enter?

Thanks

When the turn player wishes to move to the next phase, they must pass priority to the opponent. A phase cannot end until both players pass priority.

You do not have to declare which phase you are wishing to enter only that you wish to end the phase. If the opponent has a response then resolve that chain and the game goes back to an open gamestate and you can choose wether to stay in the current phase or tranistion to the next one again by passing priority

When a game phase is attempted to be switched, this DOES NOT start a chain. This is an action a player is taking that can be RRESPONDED to, but the action itself DOES NOT start a chain. Both players must agree to move to the next phase.