00:00:00 Intro
00:02:22 Quick review of part 1
00:06:18 Deep dive to hc-turn-based-game
00:12:14 TicTacToe use case
00:21:46 Continue hc-turn-based-game
00:26:09 Chess zome
00:47:06 Validation logic in holochain
00:49:17 Chess game validation
00:53:54 Chess move validation
01:02:36 Challenge! how to stop fork in move validation
01:07:38 Deterministic & Nondeterministic Validations
01:15:00 Headers as agent activities in DHT can help the challenge of fork
01:29:30 Ending
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