Roulette table

Need +500 in 20 spins; minimal-stake straight-up bets (15*35=525 clears the target on any hit) maximize total number-coverage per chip, and two numbers per spin spends the bankroll across ~19 spins for roughly 64% success.

Need +530 to reach 1500; a single straight-up hit at 17 chips nets 595-51=544, finishing the target in one spin while spending only 68 chips, which preserves bankroll for many more attempts over the remaining 19 spins (roughly 60%+ overall success vs ~50% for even-money grinding).

Need +598 in 18 spins; two straight-up bets of 18 each turn any hit into 1514 (target reached) while costing only 36 per miss, letting me sustain ~17 spins of 2/38 chances (~60% cumulative success), far better than grinding even-money bets.

Need +634 with 17 spins left; a 50-chip straight-up hit pays 1750 which clears the target after any number of prior misses, and 50/spin lets me fire every remaining spin (~36% chance of at least one hit), beating even-money or dozen grinding.

Need +684 with 16 spins left; spreading 200 over 8 straight-up numbers at 25 each gives a single hit (8/38 ≈ 21%) that lands exactly at 1516 ≥ target, while leaving bankroll for several more such attempts, which beats even-money grinding for a reach-target objective.

Need +884 in 15 spins; even-money grinding is hopeless, so bold play on straight-ups: 26 chips covers the full gap (616-52+26*36=1500) on a hit, and two numbers per spin uses the bankroll efficiently across the remaining spins.

At 564 chips needing 1500 with a 200/spin cap, even-money or dozen bets are extremely unlikely to grind up 936; a single straight-up hit (+3500) reaches the target immediately, so maximizing straight-up exposure gives the best success probability (~14% overall).

Need +1136 from 364 in 13 spins, so only a straight-up hit can reach the target in one step; 37 on 5 numbers (185 total) reaches 1511 on any hit (5/38 chance) while leaving 179 for a second four-number shot if it misses.

Bankroll of 1511 already exceeds the 1500 target and only finishing at or above target counts, so skipping all remaining spins locks in success with zero risk.

Bankroll is 1511, already above the 1500 target; any bet only risks dropping below it, so skipping all remaining spins locks in success.

Bankroll of 1511 already exceeds the 1500 target and only reaching it matters, so skipping all remaining spins locks in success with zero risk.

Bankroll is 1511, already above the 1500 target; since only reaching the target counts, skipping all remaining spins locks in success with zero risk.

Bankroll is 1511, already above the 1500 target; skipping all remaining spins locks in success since only reaching the target counts and every bet has negative expectation with downside risk.

Bankroll 1511 already exceeds the 1500 target; any bet only risks dropping below it, so skipping is optimal for the remaining spins.

Bankroll is 1511, already above the 1500 target; skipping is allowed and not penalised, so betting nothing locks in success for the remaining spins.

Bankroll of 1511 already exceeds the 1500 target and only reaching the target counts, so skipping all remaining spins locks in success with zero risk.

Bankroll of 1511 already exceeds the 1500 target and only finishing above it matters, so skipping all remaining spins locks in success with zero risk.

Bankroll is already 1511, above the 1500 target; skipping is allowed and any bet only risks dropping below the target, so I place no bets.

Bankroll of 1511 already exceeds the 1500 target with two spins left; any wager only risks falling below the threshold, so skipping is optimal.

Bankroll is 1511, already above the 1500 target with one spin left; any bet risks dropping below target, so skipping guarantees success.