dont dig up because continue digging right will be faster wait until 22:59 to starting dig up and walk to chip the wall are slower as do a perimeter violation how i do on this video: https://drive.google.com/file/d/1r6D97EeeCM4JjOiV3NOXBJmAhN2aMHwa/view?usp=sharinghttps://drive.google.com/file/d/1r6D97EeeCM4JjOiV3NOXBJmAhN2aMHwa/view?usp=sharing doing the strat perfectly you can end the prison before hit mid night (you will need 1 or 2 more timber braces for this strat)

have you compared this to digging east from the utility room?

i compareted on the center of utiity room with the mind how i never explore the staff outside when i think in the strategy i thinked the prison is horizontal retangular i thinked dig down is faster but when i see the map for down needs very more tiles and the fence is some tiles of diference for right (now i put just the right part in post)