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Both balls lie on either zide of a curved zero line which runs through the low anchor in the middle. Both putt are aimed/ hit straight at the hole showing how the first put misses to the left and how the second put misses to the right.

Remember that both putts are missed on either side of the zero line when aimed straight at the hole.

Incidentally, if you're on a straight planar surface, and you're directly below the hole, shoved putts will miss farther right and pulled putts farther left. So the same putt, depending on whether it's started slightly left or right, will break in both directions as well - and that's a non-curved zero line.

Here is one of the hardest putt on this green. At first this putt appears to occur at the 5 o'clock position on a planar surface. In actuality this is a tilted crown. The first putt appears to break up hill. The second putt shows how the putt changes direction once it crosses over the ridge.

Five minutes long, but worth it. 🙂

6-12 inches is the ideal speed, but if you're going to watch The Masters at Augusta National, some putts will still have a really wide hole but roll out a few feet past the cup.

Crowns can be tricky. Four inflection points - two highs and two lows means four straight putts.

If the ball leaves the blue line, it misses. Predictable putting makes for boring TV, but great greens reading.

They're aimed straight at the hole, but that doesn't mean the putt itself is straight. It may double-break, triple-break, or more.

For more, aimpointgolf.com

Hit a putt too hard and the size of the hole shrinks considerably.

Hit it too soft and it may wobble too much at the end to stay on line.

I'm not here yet, and the new name is "Advanced," but check this out: