
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
We play on a chessboard with sides of length 100. A move consists of choosing a rectangle formed by squares on the chessboard and inverting the colors. What is the smallest number of moves needed to make the entire chessboard completely black?

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