Arthur's swordsmanship is mathematically perfect.
The following is 自分's newly invented mathematical process of how to defeat 相手:
1. Deconstruction: Convert 相手's actions & abilities as data.
2. Formulation: Create a mathematical formula of movements to reliably & consistently counter all of 相手.
3. Solve: Solve the formulas & completely shatter the essence of 相手's attacks at their very seams.