Clickety Clack

In Clickety Clack, you score points by making dice combinations that allow you to keep moving down scoring tracks. The farther you go, the harder it will be to write more numbers — and you're not even guaranteed to score a track! To set up, each player uses the same side of their individual player board and you create a pool of 5/7/9 dice for a game with 2/3/4 players. To start a round, the active player rolls all the dice, then chooses and removes one die from the pool and "clicks" it with another die still in the pool. They then write the sum of these dice in the leftmost open space of one of the five tracks on their player board, tracks that require constantly ascending or descending values, alternating even and odd values (without repetition), specified values, or values not written previously. (The back side of the player board has different placement conditions.) If you can't write a value or don't want to, mark one of the "failed" spaces on your player board, then roll all of the dice in the pool and pick one that you rolled, clicking it with another die and marking something on your board, if possible. After each player in turn has take two dice from the pool, whoever took the last die rolls all of the dice to start a new round. Once a player has failed four times, reached the end of two tracks, or reached the "finish line" of three tracks, the game ends after the current round. You score the points listed under the final number you wrote in each row, but some of these spaces are worth zero points, so will you risk writing in them in the hope of marking one more space in the future?