CANNON MOVE-CHECK RECORD
Fixed Red-side view: files a-i left to right; ranks 0-9 bottom to top.
Position ID and side to move:
Every occupied intersection, including both generals:
Proposed cannon source and destination:
Same rank or file? Both endpoints on board and different?
Destination: empty / friendly / enemy (piece and side):
Occupied intersections strictly BETWEEN the endpoints:
Screen count and rule needed for this destination:
Tentative resulting board: cannon location / captured destination / retained screen:
Own general safe after the move? Facing-generals line or other attack:
If the opponent is in check, a tested reply (not a guessed mate claim):
Result and exact reason:
Competition rules or repetition history that still needs checking: