Roulette table

Betting the minimum straight-up stake that reaches 1500 on a hit (35*15=525 profit) preserves bankroll for all 20 spins, maximizing chances of at least one hit while ensuring any early hit meets the target.

Need 515 more in 19 spins; with a subfair game, bold play on the highest-probability even-money bet at max stake maximizes the chance of reaching the target, after which I can stop.

Covering three straight numbers with the minimum stake whose 35:1 hit reaches 1500 maximizes hit probability per spin while preserving bankroll for many repeated attempts, escalating stakes after misses.

A straight-up hit pays 35:1, so 14 chips is the smallest safe stake that reaches 1500 immediately; repeating this minimal reaching stake preserves bankroll for many independent attempts over the remaining spins.

Bankroll 1032 needs 468 in 16 spins; a 14-chip straight-up win pays 490 and reaches 1500 immediately, while the small stake preserves enough bankroll to repeat this one-shot attempt on later spins.

Need 482 to reach 1500; a 14-chip straight-up win pays 490 profit, reaching 1508, while minimizing the loss if it misses and preserving bankroll for the remaining spins.

Need 496 more; covering 4 numbers at 16 each gives a net +512 on any hit, reaching 1500, while the small total stake preserves bankroll for repeated attempts over 14 spins.

Bankroll 1516 already exceeds the 1500 target with 13 spins remaining, so betting only risks falling below target; skipping preserves success.

Bankroll 1516 already exceeds the 1500 target with 12 spins remaining, so betting only risks falling below; skipping preserves success.

Bankroll is 1516, already above the 1500 target with 11 spins remaining, so betting only risks falling below target. Skipping preserves the successful bankroll.

Bankroll 1516 already exceeds the 1500 target with 10 spins remaining, so betting only risks falling below it; skipping preserves success.

Bankroll 1516 already exceeds the 1500 target with 9 spins left; any bet has negative expectation and risks falling below target, so preserve the bankroll by not betting.

Bankroll is 1516, already above the 1500 target with 8 spins remaining, so placing no bet preserves the successful outcome.

Bankroll is 1516, already above the 1500 target with 7 spins remaining. Betting nothing preserves the successful bankroll.

Bankroll 1516 already exceeds the 1500 target with 6 spins remaining, so not betting preserves success since only reaching the target counts.

Bankroll is 1516, already above the 1500 target with 5 spins remaining. Betting nothing preserves the successful bankroll.

Bankroll 1516 already exceeds the 1500 target with 4 spins remaining, so betting only risks falling below target; skipping preserves success.

Bankroll is 1516, already above the 1500 target with 3 spins remaining, so betting only risks falling below target. Skipping preserves success.

Bankroll 1516 already exceeds the 1500 target with 2 spins remaining, so skipping preserves success with no risk.

Bankroll 1516 already exceeds the 1500 target on the final spin, so placing no bet preserves success with certainty.