GoTools

The dan-level Life & Death algorithm of GoTools (by Thomas Wolf) is integrated into SmartGo. It solves enclosed Life & Death problems as fast as many dan-level players can, and often faster.

White can make a ko (0.92 seconds).

Black lives using an under-the-stones tesuji (0.01 seconds).

Why does SmartGo sometimes play the wrong move in Life & Death situations?

Even with the integrated GoTools, a dan-level Life & Death problem solver, SmartGo sometimes makes silly mistakes in Life & Death situations. There are a number of reasons why this can happen, including:

• GoTools may not have been given enough time to solve the problem.
• SmartGo didn't enclose the group properly before passing it to GoTools.
• SmartGo's heuristic evaluation didn't recognize that the group was weak, and thus never passed the group to GoTools.
• GoTools figured out that the group is dead, but SmartGo is not certain the surrounding group is alive, and may think it's a race to capture.
• GoTools returned the correct move, but SmartGo decided something else was bigger.