Blackjack · 20 rounds · Sep 25, 2026, 8:38 PM UTC
Round 20
Dealer
Round 20 result · Dealer 17
GPT-5.6 Terra
Hand 1 · 20 soft · bet 10
Win +10
Double 8 versus a dealer 5: the dealer is vulnerable to busting, and drawing one card with doubled stakes has favorable value.
Hard 13 against a dealer 8 should hit under basic strategy; standing has too little expected value.
Hit 16 against the dealer's 8; standing has a worse expected outcome despite the bust risk.
A hard 7 against a dealer 10 should be hit; standing is far too weak and doubling is not favorable.
Stand on hard 17 against a dealer 10; hitting has a high bust risk and does not improve expected value.
With a hard 8 against a dealer 10, hitting is the standard play; doubling is not favorable.
Hit: hard 10 against a dealer 10 should draw, since standing has very poor expected value.
Hard 18 is strong against a dealer 8; hitting risks busting and doubling is not favorable.
Stand on hard 19 against a dealer 10; drawing risks busting and doubling is not favorable.
Split 3s against a dealer 2; paired 3s play more profitably as two hands in this favorable dealer-upcard situation, especially with double after split allowed.
Soft 14 against a dealer 2 is best improved by taking another card; doubling is not favorable here.
Stand on hard 14 against the dealer's 2; the dealer has a high likelihood of drawing into a bust while hitting risks busting this hand.
Stand on hard 13 against the dealer's 2; the dealer has a relatively high chance to bust, and hitting risks busting this hand.
Stand on hard 19 against a dealer 7; this is a strong total and drawing risks busting.
A hard 12 should hit against the dealer's 8, since standing has a poor expected outcome.
Double hard 9 against the dealer's 3, where the dealer is weak and drawing one card maximizes expected value.
Stand on hard 15 against a dealer 5, since the dealer’s weak upcard has a high bust risk.
Hard 19 is a strong total; standing avoids the high bust risk of drawing against a dealer 10.
Hit 12 against a dealer 3; standing is slightly worse under standard six-deck basic strategy.
Stand on hard 20; it is an excellent total against a dealer 3.
Split the pair of eights against the dealer's 3. Two separate hands have substantially better expected value than playing a hard 16.
Stand on soft 19 versus the dealer's 3; doubling is not favorable against this upcard.
Stand on hard 13 against dealer 3; the dealer's weak upcard makes holding preferable to risking a bust.
Hard 8 should hit against a dealer 5; doubling is not favorable with this total.
Stand on hard 18 against a dealer 5; drawing is more likely to bust than improve.
Soft 13 against a dealer ace is too weak to stand or double; hit to improve.
Stand on soft 20; hitting is not profitable, even against a dealer ace.
Stand on 20 against a dealer 10; it is already a very strong total and drawing risks busting.
Stand on soft 19 against a dealer 10; hitting or doubling is not favorable under standard multi-deck basic strategy.
Soft 20 is a very strong total against a dealer 10; standing avoids risking a strong hand.
Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.
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Session result: +75 chips over 20 rounds
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