Chess with editing position during game



I want to play chess. I was using on linux: chess, pychess, brutal chess, eboard, xboard
but they do not have that I need.
I want to edit the position while I am playing with chess engine and i want to cancel my last turn, and i want my time is infinite but engine turns only 30seconds maximum.
so I found on xboard game that I can edit position but ir really fail - when I edit and start again it shows: it
s not white turn.. xboard is very slow and I did not find how to up the difficulty level and I really won it 1 time I played and it's bad.
Say me the game on linux or may be wine (windows) with editing position during the game and restart after I edit.

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