椅 is a Japanese kanji written with 12 strokes, listed here under the keyword “chair”. It is built from 木 (tree) and 奇 (strange). In Remembering the Kanji by James W. Heisig it is frame 218.
On KumiJi Glyph Explorer, open the parts search and type “tree” + “strange”. 椅 is among the results, together with every other character containing the same shapes.
Open 椅 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.