This webpage is a tool for analyzing and optimizing Blackjack strategies.

Features:

1. Deck Management: Users can add or remove cards from the deck to simulate different game scenarios.
2. Rule Selection: Users can choose different Blackjack rules, such as whether the dealer checks for Blackjack or allows doubling after splitting.
3. Strategy Analysis: Based on the user-defined deck and rules, the tool calculates the optimal strategy for each possible hand.
4. Result Display: The tool displays the expected return and recommended action for each hand, helping users understand the best strategy in different situations.

How to use:

1. Adjust the deck: Click "Add Decks" to add full decks or click the buttons next to each card to adjust the number of specific cards.
2. Choose the rules: Select the applicable Blackjack rules from the dropdown menu.
3. Analyze strategy: Once the deck and rules are set, click the "Go" button to start the analysis.
4. View results: After the analysis is complete, the page will display the optimal strategy and expected return for each hand.

This tool is suitable for Blackjack players or researchers to optimize their strategies and improve their winning rate.