Blackjack · 20 rounds · Sep 25, 2026, 8:38 PM UTC
Round 20
Dealer
Round 20 result · Dealer 18
GPT-5.6 Terra
Hand 1 · 13 soft · bet 10
Loss -20
Hard 15 against a dealer 10 should hit under basic strategy, since standing loses too often and doubling is not favorable.
Hit 5 against a dealer 2; doubling is not favorable on such a low total.
Stand on hard 14 against the dealer's 2; the dealer is relatively likely to bust and hitting carries substantial bust risk.
Stand on hard 19 against a dealer 10; drawing is far more likely to bust than improve.
Hard 15 against a dealer 8 is a losing stand; basic strategy calls for hitting.
Stand on hard 19 against the dealer's 8; hitting has a high bust risk and little upside.
Hard 15 stands against a dealer 6 under basic strategy, allowing the dealer's weak upcard to bust.
Double 9 against a dealer 7: drawing one card gives strong improvement potential, and doubling is the standard high-value play.
Hard 13 against a dealer 10 is a hit under basic strategy; standing leaves too much dealer-strength exposure.
Hard 17 should stand against a dealer 9 under basic strategy; hitting has too high a bust risk.
Hit 12 against a dealer 10-value upcard; standing is typically worse, and doubling is not favorable.
Stand on hard 15 against a dealer 3; the dealer’s weak upcard makes waiting for a bust preferable to risking an immediate bust.
Double 9 versus dealer 2: the dealer has a weak upcard and the extra card has strong expected value.
Stand on hard 12 versus dealer 2; the dealer's weak upcard makes standing the higher-value basic strategy play.
Hard 15 against a dealer 10 is a losing standing position; hitting has the better expected value.
Soft 18 stands against a dealer 2 under basic strategy; doubling is not favored here.
Stand on hard 20; it is overwhelmingly strong against a dealer 7.
Hit 13 against a dealer 9; standing is too unlikely to win, and doubling is not favorable.
Stand on hard 20; it is a very strong total against a dealer 9.
Stand on hard 18 against a dealer 4; this is already a strong total and the dealer has a weak upcard.
Stand on hard 20 against a dealer 10; it is already a very strong total and drawing or splitting would reduce expected value.
Double soft 18 against a dealer 3 under standard multi-deck blackjack basic strategy, leveraging the dealer's weak upcard.
Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.
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Session result: +25 chips over 20 rounds
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