Tam hacked away at foot-thick ice a bit before mid-day to free up the tree-shaded the side gate; me, I was lazy, and waited until this evening to challenge the front walk. It had been salted before the ice fell and was salted on top today. I took a cheap hatchet and chopped outside the width of the walk to create a fault line, then attacked it with a shovel:("Before" photo here.) Took about a half-hour. How thick is that ice? Oh, 3 to 4 inches.... Whew! Most of the really big slabs shattered when heaved off to the side.
Excellent cheat: I ordered (Amazon next-day delivery: try it via Tam's link) "Yaktrax" slip-over-shoe traction thingies and they really, really work! Not spikes but steel coil springs wound around a stretchy plastic webbing.
IT'S A KLUGE
2 days ago