
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Mr. Thompson's high school soccer tournament is organized where the losing team of each match is immediately eliminated. If twenty teams enter the tournament, how many matches must be played to determine the champion?

Present the answer in LaTex format: \boxed{Your answer}
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