#5: one trip of the head, animated (bounce 54 → 55)
Machine
1RB1RA_0LC0RF_1LD1LC_1RE1LB_---0RA_1RF0RD, simulated from the blank tape. This is steps 12,287–12,492, the first trip in the close-up picture. Shown: cells −8..56 (the edge's cells −73..−9 are not touched in this trip).
← → step · space play/pause
A
edge w (continues left)
block
step
phase
transition
what changed
History: every step so far (bbchallenge default colors, time goes down)
Columns line up with the tape above. White = 1, black = 0, head red = just moved right, green = just moved left. Blue line = left end of the block at the last bounce. One row = one step, drawn 2 px tall.