
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
Let $S$ and $S_{1}$ respectively be the midpoints of edges $AD$ and $B_{1}C_{1}$. A rotated cube is denoted by $A^{\prime}B^{\prime}C^{\prime}D^{\prime}A_{1}^{\prime}B_{1}^{\prime}C_{1}^{\prime}D_{1}^{\prime}$. The common part of the original cube and the rotated one is a polyhedron consisting of a regular quadrilateral prism $EFGHE_{1}F_{1}G_{1}H_{1}$ and two regular quadrilateral pyramids $SEFGH$ and $S_{1}E_{1}F_{1}G_{1}H_{1}$.

The side length of the base of each pyramid is 1, and its height is $\frac{1}{2}$, making its volume $\frac{1}{6}$. The volume of the prism is $\sqrt{2}-1$.

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