diff --git a/chess.md b/chess.md
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--- a/chess.md
+++ b/chess.md
@@ -1,10 +1,13 @@
 # Chess
 
-- recommended by [[dickfeynman5]] 
+- a [[sport]]
+- an [[art]]
+- recommended by [[dickfeynman5]]:
   - [[agadmator]]
   - [[chess network]]
   - https://twitter.com/DickFeynman5/status/1362835021644595200
 - [[human thought]] https://twitter.com/flancian/status/1357034895814582280
+- [[chess hypothesis]] https://twitter.com/flancian/status/1362833317205315587
 
 
 [//begin]: # "Autogenerated link references for markdown compatibility"