Tameshigiri (試し斬) is a targeted cutting with a sword test. During tameshigiri a swordsman skill is testing these days. Different materials are used to test. Mostly rice straw (wara), top layer of tatami mats (goza), bamboo and much more.
Miyamoto Musashi (1584 – June 13, 1645), also known as Shinmen Takezo, was an expert Japanese swordsman and ronin. Musashi, as he was often simply known, became reknowned through stories of his excellent and unique double-bladed swordsmanship and undefeated record in his 60 duels. He was the founder of the Hyoho Niten Ichi-ryu style of swordsmanship and in his final years authored The Book of Five Rings, a book on strategy, tactics, and philosophy that is still studied today.