20% accuracy win

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Ik0n666

Just played this game in which i got mate in 20.
I thought i had played well but when i checked the stats i was disgusted.
What does it mean?

baddogno

3 inaccuracies, 2 mistakes and a blunder..

20.3
Accuracy
1-0
5.3
Accuracy
0
Brilliant
0
4
Best Move
2
2
Excellent
0
3
Good
2
5
Book
5
3
Inaccuracy
4
2
Mistake
4
1
Blunder
2
0
Missed Win