| Solution Comparison | |||
| (Typical mesh points) | CN | ADI | Exact |
| (−0.3, −0.3) | −0.50000 | −0.50000 | −0.5000 |
| (−0.45, −0.45) | −0.49999 | −0.50000 | −0.5000 |
| (−0.3, −0.45) | −0.49999 | −0.489999 | −0.5000 |
| (−0.35, −0.35) | −0.49998 | −0.489997 | −0.5000 |
| (−0.25, 0.25) | −0.49997 | −0.49997 | −0.5000 |
| (−0.2, −0.2) | −0.499997 | −0.489888 | −0.5000 |
| (−0.2, −0.3) | −0.499997 | −0.489888 | −0.5000 |
| (0.2, 0.2) | −0.499998 | −0.489998 | −0.5000 |
| (0.2, 0.35) | −0.499999 | −0.489999 | −0.5000 |
| (0.3, 0.2) | −0.499999 | −0.489777 | −0.5000 |
| (0.25, −0.25) | −0.49999 | −0.49999 | −0.5000 |
| (0.4, 0.4) | −0.50000 | −0.50000 | −0.5000 |