user674: I used lichess to analyse some of my games (lichess.org -> tools -> import game). It puts my bad moves (and those of my opponent) in one of three categories; "inaccuracy", "mistake" and "blunder". I guessed from the names (and the positions) that an inaccuracy is better than a blunder, but I wondered what the definitions were.

user7966: Blunder: 300 centipawns
Mistake: 100 centipawns
Inaccuracy: 50 centipawns
This is sourced from http://en.lichess.org/qa/75/how-are-these-determined-blunder-mistake-and-inaccuracy
It is the first thing that appears when you google "lichess inaccuracy mistake blunder".

674: <p>I used lichess to analyse some of my games (lichess.org -> tools -> import game). It puts my bad moves (and those of my opponent) in one of three categories; "inaccuracy", "mistake" and "blunder". I guessed from the names (and the positions) that an inaccuracy is better than a blunder, but I wondered what the definitions were.</p>
 7966: <p>Blunder: 300 centipawns</p>

<p>Mistake: 100 centipawns</p>

<p>Inaccuracy: 50 centipawns</p>

<p>This is sourced from <a href="http://en.lichess.org/qa/75/how-are-these-determined-blunder-mistake-and-inaccuracy" rel="noreferrer">http://en.lichess.org/qa/75/how-are-these-determined-blunder-mistake-and-inaccuracy</a></p>

<p>It is the first thing that appears when you google <a href="https://www.google.com.au/webhp?sourceid=chrome-instant&amp;rlz=1C1CHWA_enAU604AU604&amp;ion=1&amp;espv=2&amp;ie=UTF-8#q=lichess+inaccuracy+mistake+blunder" rel="noreferrer">"lichess inaccuracy mistake blunder"</a>.</p>
