Error System

@EL797 Yeah. Maybe I'm just new so I know this lately...

Very nice logic level with another beautiful design...Thanks for sharing and great job @Tadashi Suzuki

I gave it a go this morning and then just again and I'm not getting the timing down to not get zapped so I had enough after more than 30 attempts.

Great logic level with complex timing/ability step (in my solution) to get rid of zapper. Some tapping was really annoying because such reduced visibility.
Thanks!

Ooooh tricky! Eventually I got a bot to go where I wanted and then the rest was easy. Clever design!