How do zerg counters mines

Widow mines is a stress-factor for most. So here are some tips for you as a Zerg player!

Early game:

• Send zuicide Zerglings to deal with the Widow Mines. If you think the Terran might have Widow Mines in the field, always keep 2 Zerglings ahead of your army move path. (If you Bane-Bust, send 1-2 Zergling up the ramp to trigger the mines)
• Bring 2 Overlords with your army, or send Overlords to where you might think there is a mine or more. (it takes two mines to kill one Overlord)

Mid game:

• Same as early game.
• Use overseers together with ranged units. Always get the speed upgrade. (TIP: Use the "Hold" function often when engaging the Terran defences with mines - by this, your ranged units will not follow the Terran units back into the mines, but instead kill the mines since you have an Overseer or two, maybe three)
• If you go for Mutas, always magic box them when attack the Terran!

Late game:

• Shouldet be a problem for you.
• But same as the previous points.

All ways be scouting so you can always get the surround.

Being a zerg you need to have very good map awarness. Spread your overlords, put lings on attack paths, and keep your mutas active. The key is knowing where and when the Terran is going to attack you.

If you know this you can do all the difficult micro before an engagment. Spread out in a big ring around a good open spot on creep and attack as soon as the Terran walks into the ambush.

This will let you crush Terrans untill you hit high diamond/masters players. After that you need to keep a sharp eye out during the engagment and split the zergling groups being targeted by the mines. This is possible because you know the first lings are the ones that are going to be targeted so you split around them when the mine becomes visible prior to firing. Very difficult though. Also I recomend going very bane heavy, lots of banes are countered excelent splitting and that shouldn't be an issue for you yet.

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I will not go into much detail, since the macro orentated answers are short and simple.

Early game: Spine crawlers (outrange) Single zerglings (to triggers one line)

Mid game: Overseers go first to tank damage and reveal them. More spines and spores to protect your multiple bases

Late game: As long as you are not massing fragile units like mutalisks, overseer + any support will take them out quite nicely. Note that mines are short ranged, so long range units like swarm hosts and broodlords can force the terran to fall back.