You might find some inspiration here: https://puzz.link/p?cave/10/10/i44t4g3r3g3j2h2h3zp3q5g32k4 http://pzv.jp/p.html?bag/10/10/i44t4g3r3g3j2h2h3zp3q5g32k4 (from http://blog.livedoor.jp/bachelor_seal-puzzle/archives/901448...)