Dutching

[lazza_w]

The simplest Dutch would be in a game with only 2 outcomes (eg tennis) where only player A or Player B can win.

If they were equally matched then the odds on each should be 2.0. Therefore if you bet £10 on player A and £10 on player B, whatever the outcome you would win £20 at 1 bookie and lose at the other making it a no-loss match.

If the odds are lower (eg 2.0 at 1 site but 1.9 at the other) they you need to adjust the stakes to get equal outcomes and will lose money - you will get 1/(1/2.0 + 1/1.90)=97.4% of your money back.

If the odds are higher (eg 2.0 at 1 site but 2.1 at the other) then you will get a profit back equal to 1/(1/2.0 + 1/2.1)=102.4% of your stakes.

You can do the same thing with 3,4,5 etc way matches although these are much harder to spot. Although Andy will disagree, as dutching calculator is handy for these. You can find several but an easy online one is at oddschecker - click on the 'powertools' drop down box at the top right.

As Andy says - find some odds and post them and someone can show you how it would work

[1mstgt]

just saw this
Marseille v Nice
06-Dec 18:00 04-Dec 07:59 Bet-at-home - (HOME WIN ***): 2.25
Globetsport - (DRAW): 3.4
Betsafe - (AWAY WIN): 5.6
1.090 1.090 109%
Does this also mean i would need accounts at all three bookies,haven't done betsafe yet,so could i try to find similar at another bookies
Cheers, Sam

[Andy]

Yes thats right you would need accounts at all three sites. The amounts to back at each I dont know how to work out in my head and so....... I am 99% sure Lazza has a spreadsheet which does it for you, use that

I will PM him and see if he can help us out. You have the general idea though. I find dutching is mainly best for US sites and it can be easily worked out using there odds system and backing one team at +140 is an exact match with the other team at -140 and they dont have Draws. You just "risk" your balance at the +site and "win" that risk amount at the -site for a no loss bet. If you get the +vs higher than the -ve your in arb territory.

[lazza_w]

I don't have a spreadsheet of my own that does 3 way dutches but check out this post for a link to several dutching spreadsheets

MoneySavingExpert.com Forums - View Single Post - Dutching introductory guide
The multiback one is the 1st one I'd try

[lazza_w]

I've just run the figures through the Multiback and I get theses results.

If you were to bet £100 on Marseile at 2.25 you should bet £66.18 at 3.4 on the draw and £40.18 on Nice at 5.60.

The end result should be below

Marseille Win - Gain £100x1.25=£125. Lose £66.18 + £40.18. Net profit £18.64
Draw - Gain £66.18x2.4=£158.83. Lose £100 + £40.18 Net Profit £18.65
Nice - Gain £40.18x4.6=£184.83. Lose £100+£66.18. Net Profit £18.65

Note
1) You need accounts at all these sites and you also need to spread your money around a lot more than having it in 1 bookie and 1 or 2 exchanges
2) You should round the numbers off a bit. Bookies will look suspiciously at you if you bet £40.18. Bet £40 instead. It may be safer to bet £65 on the last outcome and back the rest at Betdaq.
3) It is obviously hard to spot 3 or more way dutches. I can't be bothered unless somewhere liek Topbetter tells me there's a match
4) you always risk being limited an a bet at a bookie. It would be a pain to place the 1st 2 bets then find you're only allowed £5.00 on the 3rd bet so (i)place the bets at the bookie that's most likley to limit you 1st (ii) have a back up plan, be it a different bookie or an exchange to cover the rest

[munk]

I would highly recommend the multiback spreadsheet for dutching also.

I think you can probably do it online as well at arbcruncher.com although it's slower than a spreadsheet of course

To do quick calculations for 3way etc dutches, add up the reciprocals of the decimal odds and if they're under 1 then you've got a profitable dutch - see here for more info on calculating dutch profitability.

Also remember to check threads tagged with 'dutching':

The Gamblers Underground - Threads Tagged with dutching


Actually I will merge this thread with the one above, might as well keep all the info in one place - you can read all the posts above now ^^^ for more info on dutching. Was tempted to copy lazza's post on summing reciprocals into this thread because it's a bit simpler to read than mine possibly...

[1mstgt]

brilliant,the next step is to have a go
many thanks, sam

[lazza_w]

I also forgot to warn you that a bookie may cut its odds. When they do this it is normally by a much bigger factor that you get when odds drift an exchange - in your example Bet-at-home could drops their odds from 2.25 to 2.0 which would have a dramatic effect on the profitability of the dutch.

For that reason get every thing set up then refresh all the odds just before you back everything, check the odds that you got after placing the bets as well just incase.

[1mstgt]

i noticed this when i was having a few trial runs using multiback,took a bit of getting used to but I reckon I might have a go tomorrow when I have a bit of time
Again,many thanks for the advice.