define(case_title, Internal player)
---
title: case_title
...
# case_title
> Difficulty: case_difficulty/100
If `blackjack` is called with the `-i` option, it uses an _internal_ player to play against itself. By default it plays basic strategy. Run
```terminal
include(run.sh)dnl
```
and you will get the following report with the results of playing one million hands with basic strategy.
```yaml
include(report.yaml)
```
case_nav