Instead of life icons, ? and -> use one-time hints, which get disabled after usage.
In total should be 3 hints, after which only "give up" is available.
Ideas:
Open 1 letter, cost - 1 life
Block unused keys - 1 life
Open whole word, "give up" - test is failed
Open middle letter, cost - free
Skip this word and move to the end of test, cost - free
Instead of life icons, ? and -> use one-time hints, which get disabled after usage. In total should be 3 hints, after which only "give up" is available.
Ideas: Open 1 letter, cost - 1 life Block unused keys - 1 life Open whole word, "give up" - test is failed Open middle letter, cost - free Skip this word and move to the end of test, cost - free