Made it ALL TESTS PASS. HumanSolve will reject techniques that aren't useful (and log a message to stderr, since really that shouldn't happen). Now just need to go through one by one and fix all of the ones that still return non-useful ones--since technically they could be skipping useful ones by bailing early before they really have one.
Made it ALL TESTS PASS. HumanSolve will reject techniques that aren't useful (and log a message to stderr, since really that shouldn't happen). Now just need to go through one by one and fix all of the ones that still return non-useful ones--since technically they could be skipping useful ones by bailing early before they really have one.

jkomoros/sudoku,jkomoros/sudoku,jkomoros/sudoku