Stop or continue
You can keep your points or draw again. Think about the choices you will have after the next card.
Continue your unfinished round
Your answers are saved in this tab. Continue from where you left off.
Continuing uses no additional practice start.
Discard the unfinished round?
Your answers from this round will be discarded. You can choose your settings before starting a new round.
Starting the new round uses one practice start.
Two draws · Choose again after seeing the first card.
Your last settings are ready. Change them whenever you like.
6 questions · No time limit
Example
Example
Example · Standard
Which choice gives the higher expected final score?
Bank: 30 points · Draws left: 2
Stop to keep your bank. Or draw a card and add its value, then decide again. Drawn cards are removed. When your draws run out, keep the final bank. Negative scores are allowed.
- Questions answered
- 0 / 6
- Active time
- 0:00
Ready to start?
Choose the action with the higher expected final score. Compare stopping now with taking the next card.
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Reload pageOptional and off by default. Share starts, completions, replays and error categories. For visits from ChatGPT, starts and completions can also include the first QuickenBrain page and broad country. No answers, drawings or names.
How this data is usedHelp
Every remaining card is equally likely. Add its signed value to your bank and remove it from the deck. Stopping keeps your current bank; reaching the draw limit ends the round. Negative scores are allowed. A higher expected score means a better average over many repetitions, not a guaranteed better result. Explanations evaluate the best later decisions using the remaining cards.
Each round has six questions and no time limit. Choosing an answer locks it. Review the steps, then move to the next question. Finish all six to save the round. Active time includes reviewing the steps, but does not count time when this page is hidden. Speed does not affect your score.
Use Tab and Enter or Space to choose an answer. The number keys also select answers, except when another control is focused. After an answer, Enter goes to the next question.
Original practice puzzles, not a standardized assessment.
About this practice
Learn a method
Compare stopping valuesYou can keep your points or draw again. Think about the choices you will have after the next card.
Report a problem
Optional and off by default. Share starts, completions, replays and error categories. For visits from ChatGPT, starts and completions can also include the first QuickenBrain page and broad country. No answers, drawings or names.
How this data is used