国际跳棋

• 囗(surround; enclose)RADICAL
• 玉(precious jade; gem)ASSOCIATIVE

A nation is enclosed land that contains precious treasures within.

• 足(foot; leg)RADICAL
• 兆(omen; symptom)PHONO-SEMANTIC

Leaping with both feet signals a coming great transformation.

• 木(tree; wood)RADICAL
• 其(that; that one)PHONETIC

A wooden game piece sounds like the character for "strange."