How to strip doors with eggshell water based paint on them?

I have some beautiful old pine doors that the council in their wisdom, even though I begged them not to, painted in water based paint. I viewed the property when they were preparing it for re renting and the doors were stunning all stripped and beautiful.

I tried the chemical route and got no where. How can I return these doors to there natural state please.

Thank you in advance for any advice and for taking the time to read and reply

Zoe

 

Thanks Astramax I haven't tried one but will give it a go, I was hoping a chemical product would be available to dip them because I have 5 to do lol, Thanks again