I did a short video to explain things in detail:
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Open Source:
- Chess Engine: Stockfish 14 ([login to view URL])
- GUI: [login to view URL]
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Outline:
1. Red Block
Computer see this "Red Block" as a literal block.
- It is illegal to eat the "Red Block"
- It is illegal to play on that spot with the "Red Block"
- Computer is to play around the "Red Block"
- Position: Right-click moves it off the board
2. Material difference
3. Fix Depth
4. Mate in 9
Checkmate
5. Draw 3-fold repetition
6. Selection