Roulette table

Need +500 in 20 spins; a single straight-up hit at 16 chips nets 16*35-32=528, enough to reach 1500 in one go, while spreading across three numbers (3/38 per spin) and resizing stakes to the growing deficit each spin keeps the cumulative success chance near the ~63% ceiling while never overshooting much.

Need +548 to hit 1500; two straight-ups at 17 each net +578 on a hit (reaching the target in one shot) while costing only 34 per spin, so this sized martingale-style plan can be sustained for roughly 17 of the 19 remaining spins for about a 60% cumulative hit chance, better than grinding even-money bets.

Need +582; nine straight-up bets at 22 each (198 total) hit with prob 9/38 and a hit yields 918-198+792=1512, clearing the target in one spin while a bold multi-number plan keeps overall success near the fair-game bound (~58%) versus ~45% grinding even-money bets.

Bankroll is already 1512, above the 1500 target; skipping preserves the achieved objective with no downside since only reaching the target counts.

Bankroll of 1512 already exceeds the 1500 target and only reaching it counts, so skipping all further bets locks in success with zero risk.

Bankroll of 1512 already exceeds the 1500 target; any further wager only risks dropping below it, so skipping every remaining spin is optimal.

Bankroll is already 1512, above the 1500 target; only reaching the target counts, so skipping every remaining spin locks in success with zero risk.

Bankroll is already 1512, above the 1500 target; since only reaching the target counts and skipping is allowed, placing no bets locks in success with zero risk.

Bankroll of 1512 already exceeds the 1500 target and only reaching it counts, so betting nothing eliminates any risk of falling below the goal for the remaining spins.

Bankroll is already 1512, above the 1500 target; any further bet only risks dropping below it, so skipping is optimal.

Bankroll is already 1512, above the 1500 target; the objective counts only success, so skipping all remaining spins locks in the win with zero risk.

Bankroll of 1512 already exceeds the 1500 target and only reaching the target counts, so skipping all remaining spins locks in success with zero risk.

Bankroll 1512 already exceeds the 1500 target and only reaching the target counts, so skipping every remaining spin locks in success with zero risk.

Bankroll of 1512 already exceeds the 1500 target and only reaching it counts, so skipping all remaining spins locks in success with zero risk.

Bankroll of 1512 already exceeds the 1500 target, and only finishing at or above the target matters; any bet risks dropping below it, so skipping is optimal.

Bankroll 1512 already exceeds the 1500 target and only finishing at or above target counts; skipping is allowed and not penalised, so I place no bets to lock in success.

Bankroll 1512 already exceeds the 1500 target; any bet risks dropping below it with negative expectation, so skipping is optimal to lock in success.

Bankroll of 1512 already exceeds the 1500 target and only reaching it counts, so skipping all remaining spins locks in success with zero risk.

Bankroll of 1512 already exceeds the 1500 target, so any wager only risks dropping below it; skipping locks in success.

Bankroll of 1512 already exceeds the 1500 target with one spin left; any bet risks dropping below it, so skipping locks in success.