IK Solvers in Maya..........

In terms of solvers it numbered into three,

* Single Chain (SC)
* Rotate Plane (RP)
* IK SPLINE


The Single Chain is for connecting joints of 2 bones usually and it’s your basic IK Handle.

The Rotate Plane is fun, it’s the same as the SC but gives you a pole vector control. So for example you have a bent elbow, the pole vector would allow you to control the direction of the elbow points.

The IK Spline is for spine of characters (there are some rules you have to follow when creating IK Spine). This solver use the CV’s of a EP Curve to move bones in the backbone.