Does anyone have a hint for Spire-22? I believe I understand all the rules, and if this were a problem involving coins or marbles without a grid, I know the approach I'd take. What I can't figure out is how to map that solution on to this 8x8 grid, to the point that I'm starting to wonder if I'm on the right track.
Spoilers below fold
-----------
I'm assuming I've got to form a star shape? But I can't figure out a rotation that makes five lines. I'm operating under the assumptions:
- I've got to make five straight lines
- A line is 4 pieces in either a horizontal, vertical, diagonal, or knight-move configuration
- A line can't have more than 4 pieces, so a line of 5 isn't two lines of 4
- the gate indicates the number of additional lines require to pass, in this case 5.