Last spin with 1000 chips needs +500 to reach 1500; the regret-minimizing single-spin policy is 10 straight-up bets of 20 each, the maximum coverage the 200 cap allows, since any hit nets +520 (bankroll 1520) with success probability 10/38, the highest achievable.
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Result
Session result: +520 chips over 20 spins
Target 1,500 reached
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