Update README.md

README.md

@@ -59,12 +59,33 @@ size_categories:
 
 # Dataset Card for the Lichess Rated Standard Chess Games Dataset
 
-<!-- Provide a quick summary of the dataset. -->
 ## Dataset Description
 
-**6,111,210,071** standard rated games, played on lichess.org
+**6,111,210,071** standard rated games, played on [lichess.org], updated monthly from the [database dumps](https://database.lichess.org/#standard_games).
+
+This version of the data is meant for data analysis. If you need PGN files you can find those [here](https://database.lichess.org/#standard_games). That said, once you have a subset of interest, it is trivial to convert it back to PGN as shown in the Dataset Usage section.
+
+This dataset is hive-partitioned into multiple parquet files on two keys: `year` and `month`:
+
+```bash
+.
+├── data
+│   └── year=2015
+│       ├── month=01
+│       │   ├── train-00000-of-00003.parquet
+│       │   ├── train-00001-of-00003.parquet
+│       │   └── train-00002-of-00003.parquet
+│       ├── month=02
+│       │   ├── train-00000-of-00003.parquet
+│       │   ├── train-00001-of-00003.parquet
+│       │   └── train-00002-of-00003.parquet
+│       ├── month=03
+│       │   ├── train-00000-of-00003.parquet
+│       │   ├── train-00001-of-00003.parquet
+│       │   └── train-00002-of-00003.parquet
+│       ├── ...
 
-This dataset is updated monthly.
+```
 
 
 ### Dataset Creation
@@ -84,6 +105,9 @@ Using the `polars` library:
 
 Using DuckDB:
 
+Using `python-chess`:
+
+
 ## Dataset Details
 
 ### Dataset Sample
@@ -103,4 +127,11 @@ Every row of the dataset contains the following fields:
 
 - **`Event`**: `string`, 
 - **`Site`**: `string`,
-- 
+
+### Notes
+
+- About 6% of the games include Stockfish analysis evaluations: [%eval 2.35] (235 centipawn advantage), [%eval #-4] (getting mated in 4), always from White's point of view.
+
+- The WhiteElo and BlackElo tags contain Glicko2 ratings.
+
+- Games contain clock information as PGN %clk comments since April 2017.