card: correct the frontier comparison, link the write-up

README.md

@@ -17,10 +17,12 @@ nothing: no solver, no example solutions, no human data.
 - Solves **96%** of fully scrambled cubes (25 cubes, 20-move scrambles)
 - Solves **every** cube scrambled with 10 moves or fewer
 - Built as a control for [RubiksBench](https://brianbriscoe.dev/lab/rubiksbench),
-  where the best frontier language models solve 50 to 80% of scrambles when they
-  write the whole answer in one go
+  where language models must write the whole answer in one reply. On the same
+  full scrambles the best of them, GPT-6 Astra, solves 9 of 10 with answers
+  averaging over 100 moves; this model's answers average about 21. It is not the
+  same test: this model gets a search loop, the language models get one reply.
 
-Write-up: https://brianbriscoe.dev/lab/tiny-cube-solver (coming soon)
+Write-up and replays: https://brianbriscoe.dev/lab/tiny-cube-solver
 
 ## Try it