Hey, i was doing pvp, and then i realised that my team used to lack against, 2 types of moves/pokemons, then i thought, lets change some pieces, i did,and then it lacked against other 2 types of moves/pokemons , and then i tought, i need to figure out a good coverage and team resistance, i searched a bit and i found that site : https://www.teammagma.net/teambuilder/ that gives u the information u need :D

 

1- When u open the site it will show like this https://gyazo.com/6a774077b9660823549ce94fd3041788

2- You put your team, or the team that u have in mind, https://gyazo.com/4e3e29c253dd6aca503aac25990c6a9b

3- As u going to fill the blanks the chart start to fill itself https://gyazo.com/a6aec802f10b455a606e1b0343dc10f1 as u can see Green box , means OK , red means BAD

4- If u want to get more information u can put the moves , example : https://gyazo.com/9300da0e9a2afcd07c15e4baa976691c and u go to next tab, Type Coverage https://gyazo.com/3e0e1b9fdea0b1d414e8f0839ce270ef https://gyazo.com/fbc33b8c851628d5d9cd3670011fbe1e

5- This is how it looks at the end https://gyazo.com/13776cb4c11778b41a25faa7c860aa9a as you can see my team has 2 pokemons that are bad against poison, but has 2 that are good against poison, and 1 immunity, so it cover the 2 lacks :D . But if see Ghost , the square is dark red, that means that is a realy big lack, has u can see i got 1 weakness and 0 resists . Just like water, i got 2 weakness and only 1 resist.

 

I hope i helped u all, and now go make that teams , and make sure u have [glow=red]NO DARK RED BOXES[/glow]

Depends how u use ur line up - off setting through effective attack may make It vunerable down the road dark types are more offensive where as psychic types are defensive preference really