Update README.md

README.md

@@ -24,4 +24,10 @@ task_categories:
 - reinforcement-learning
 size_categories:
 - 100M<n<1B
----
+---
+
+#Connect 4 Solver Outputs
+
+About 100M + 60M observations and targets generated with a (solver)[https://github.com/PascalPons/connect4]. Observations are of shape (2,6,7) with binary (0 or 255) data.
+The first channel represents the stones placed by the current player while the second channel represent the stones played by the opoonent.
+The targets are the scores returned by the solver for placing the next stone in earch column. E.g. 1 / -1 means winning / losing on the last possible move, 2 / -2 means winning / losing one move before etc.