Roulette table

Two 15-chip straight-up bets each cover a number, so a single hit reaches the target: 1000 + 525 - 15 = 1510. Keeping stakes small lets me repeat across many of the 20 spins, raising stakes after losses so one hit still reaches the target.

Only reaching 1,500 counts, so I spread 189 chips across nine straight-up numbers at 21 each: any hit pays 756 for a net gain of 567, reaching about 1,537 in one spin. The chance of a hit is 9/38, about 24%, and a miss leaves 781 chips to keep trying.

Only reaching 1500 counts, so I'm playing boldly. Seven straight-ups at 26 each (182 total) give an 18% chance to clear the target this spin (net +754) while keeping enough bankroll for several more attempts.

I need +901 to reach the target, and a single straight-up hit at 28 on three numbers nets +924. That covers the gap in one hit while leaving bankroll for several more attempts, which should give roughly the best chance of reaching the target.

Bold play: stake the minimum on a single number so that a hit (35:1) lifts the bankroll from 515 to at least 1,500, which maximises the number of attempts over the remaining spins.

A single straight-up hit at 29 chips pays +1015, which reaches the 1,500 target, so I stake the minimum needed each spin. That spreads the bankroll across about 13 attempts, for roughly a 29% chance of success, which beats grinding with even-money or dozen bets.

A 30-chip straight-up hit pays 1,050, which lifts the bankroll from 457 to 1,507 and reaches the target in one win. Small single-number bets keep enough chips for many attempts over the 14 remaining spins.

A single straight-up bet of 31 is the smallest stake that reaches 1,500 if it hits (427 - 31 + 36×31 = 1,512). Betting the minimum qualifying straight each spin covers the most pockets over the 13 remaining spins, for roughly a 25% chance of reaching the target.

With 396 chips needing 1500, I stake the minimum on a single straight-up (32 × 35 = 1120 ≥ 1104 needed) so one hit reaches the target. This preserves as many further attempts as possible.

I'm far from the target with 11 spins left, so a long-odds straight-up bet is needed. A 33-chip single-number bet reaches 1519 if it hits, and it preserves bankroll for about ten such attempts.

I need 1,169 more chips. A single straight-up bet of 34 wins exactly enough, since 35 × 34 = 1,190. Staking only what is needed keeps enough chips for about eight tries, which maximizes the chance of reaching the target.

Reaching 1500 from 297 needs a big payout. Betting 35 on a single number reaches the target if it wins (297 + 1225 = 1522) and lets me take about seven such shots, which gives the best chance of hitting the target overall.

A 36-chip straight-up bet is the smallest stake that reaches 1,500 on a hit: 36×35 plus the remaining 262 gives 1,522. Using minimal single-number shots lets me take about seven attempts over the remaining spins, and past results don't change the odds.

My bankroll of 1522 already meets the 1500 target and only finishing at or above it counts. Every bet has negative expected value and could drop me below the target, so I skip.

The bankroll of 1522 is already above the 1500 target, and every bet has negative expected value, so any wager only risks dropping below the target. Skipping locks in success.

The bankroll is already 1,522, above the 1,500 target, and only reaching the target counts. Any bet could only risk dropping below it, so I skip.

Bankroll of 1522 already exceeds the 1500 target, and every bet has negative expectation that could drop us below it, so skipping preserves success.

Bankroll is 1522, already above the 1500 target, so skipping the remaining spins locks in success. Any bet only risks dropping below the target.

I'm already at 1522, above the 1500 target, and only reaching the target counts. Skipping locks in success, while any bet adds risk with no benefit.

At 1522 chips I am already above the 1500 target with one spin left, so skipping locks in success. Any bet over 22 chips would risk falling below the target for no benefit, since the margin does not count.