10-Unit Betting System — Session Report

You heard of the 10-Unit Betting System?
Haven’t really heard much about it lately lol.
It’s a betting system from an older generation of players — especially old-school roulette regulars.

The name pretty much says it all: you split your bankroll into 10 units and bet in those units.

How the 10-Unit Betting System Works

Simple.
First, decide on three things: your Target Profit, your Limit, and your Unit size.

Target Profit (e.g. $100)

Decide how much you want to make if the 10-Unit System succeeds.
I’ll set mine at $100.

Limit (e.g. $1,000)

Set an amount you can afford to lose — this is your stop-loss point.
Best to set it at around 10× your target profit.
I’ll set mine at $1,000 — 10× the target.

1 Unit (e.g. $10)

Your unit size is your Target Profit divided by 10.
Since my target is $100, 1 unit = $10.

Write out a row of 10 ones

Start by writing “1” ten times in a row.
The 10-Unit System works by crossing off numbers and adding new ones as you go.

First bet: 2 units

Your first bet is the sum of the two numbers at each end of the sequence.
Since 1 unit = $10, the first bet is $20.

If you win

Cross off both end numbers. Your next bet is the sum of the new ends.
And when you win, add the profit to your Limit.

If you lose

Add the number of units you just lost to the right end of the sequence. Your next bet is again the sum of both ends.
And when you lose, subtract the loss from your Limit.

Keep repeating this. Once all the numbers in the sequence are crossed off, you’ve made 10 units of profit.

So — I want to try the 10-Unit System on European Roulette… but honestly, tracking the sequence, calculating the bet each round, and updating the limit after every win or loss — isn’t that just exhausting??

It really is lol.

That’s where the tool I built comes in: Labouchere Edge, the auto-calculator for the Labouchere Betting System!

The only real differences between the 10-Unit System and the Labouchere Betting System are the 10-equal-split rule and the Limit setting — and Labouchere Edge supports both, which means it doubles as an auto-calculator for the 10-Unit System too!

Anyway, I’m going to actually play the 10-Unit System today — but before I start, let me be honest: I’m not a fan lol.

Actually, let me just say it:

It’s probably going to fail!

In my experience, the longer a session drags on, the more it works against you — and eventually the casino takes everything…

I use the Labouchere Betting System all the time, but here’s the thing — the more rounds you play at roulette, the more the odds tilt against you.
In other words, short games are the better play.
But the 10-Unit System splits your target into 10 parts — which sounds low-risk on paper, but from a win-rate standpoint, it’s actually high-risk.
And the longer the game goes, the higher the dollar risk gets too…

I’ll explain all of that while actually playing today.
Obviously I plan to win!

Live Play

Setting 1 unit at $10.
Target profit $100, limit (max loss) $1,000.

Betting Black on red/black the whole way through.
I’ll cut my losses when the balance hits the limit — but this video roulette table has a $100 max bet, so if my bet ever goes over $100, the session’s done there too.

Plugged the numbers into Labouchere Edge, risk setting: “Small — Fine Split (Low Risk · Long Game)”.

Hit “Start Game” and the target profit splits into 10 equal parts.

First bet: $20.
Ok, Let’s spin!

Staring down this ridiculous sequence and losing on Round 1 absolutely kills my motivation…
Lost, so I’ll hit “LOSE” in the tool.

Next bet: $30.
At least the tool handles the memo so I don’t have to write anything — but thinking about having to cross off every single number just to win? Honestly terrifying lol.

Won.
Hmm — red and black alternating right from the start.
That’s a bad omen…

Well, won, so I’ll hit “WIN” in the tool.

Next bet: $20.
Already bored lol.
I just want to bet it all at once lol.

Ugh, there it is — the losing streak makes the sequence longer, and more losses means the bets keep climbing…
Starting low-risk doesn’t mean anything at this point…
This is exactly the downside of the 10-Unit System.

Lost, so I’ll hit “LOSE” in the tool.

Next bet: $70.
Still doesn’t feel like I’ll hit the limit though.
First goal: get back to even…

Nice!
Now we’re talking.
Won, so I’ll hit “WIN” in the tool.

Next bet: $50.
Time to push forward!

Oh no lol.
The bets are getting way too high…
This is a $100 max-bet video roulette table, so I need a winning streak soon or I’m done.

Anyway, lost, so I’ll hit “LOSE” in the tool.

Oh damn.
Next bet: $90.
I’ve clawed back this far — I can’t lose now…

Please, god!

Damn it!

That’s it! I’m done! Time to pack it up!

The limit still had room, but the next sequence would be “2・3・5・7・9” — and 2+9=11 units, that’s $110. Over the $100 table max, so there’s nothing I can do…

That’s a wrap.

Wrap-Up

Yeah, the 10-Unit System was trash lol.

Like I kept saying during the session — short games are the key to winning at roulette. A long, drawn-out session is nothing but risk for the player.
And even when you claw back to even, your bets are already inflated from the losing streak — so that original 10-part split becomes completely meaningless.

In this case, I should’ve stopped the moment I got back to even and started fresh with the 10-Unit System on a new session.

A little late for that, I know lol.

Sure, I could try to recover the $160 loss by splitting it with the Labouchere Betting System — but that’s just an infinite loop. Cutting my losses here.

Seriously, just don’t use the 10-Unit System. I cannot recommend it.

Even if you’re curious — just don’t!