Filters
Coin Wallet - Koichi Miura
Stairs Posting - Koichi Miura
Chained Lumbers - Koichi Miura
Pocket - Koichi Miura
Pentagonal Pencils Puzzle arr. - Koichi Miura
Integers in Square  - Koichi Miura
Nine Balls - Koichi Miura
Chiral 2&2 - Koichi Miura

Unknown / Wood

Designer: Koichi Miura
Maker: MINE

5L Basket - Koichi Miura
Cat Puzzle - Koichi Miura
Trapped Bird - Koichi Miura

3D Packing

Designer: Koichi Miura
Maker: MINE

Unknown

Designer: Koichi Miura
Maker: MINE

W-Frame - Koichi Miura
Extra Bump - Koichi Miura
10-8 Puzzle  - Koichi Miura