Easy bonus clearing with $540 EV at Mansion Keno (after Steelers bet)

[EC Mount]

If your first deposit at Mansion was $1100 to the the Steelers bet, then you also were given an $1100 bonus that can be played off in the casino or poker room. In the casino you must wager 10x the bonus+deposit. In this case, total wagering of $22,000 is required (($1100+$1100) *10)

This is further complicated by the fact that certain games have reduced contribution to the required wager. For instance, blackjack only contributes 10% of each bet towards your wagering requirement. So, a $5 bet on blackjack only contributes $.50 cents towards your $22,000 requirement. Baccarat contributes 25% towards your wagering requirement and results in about $150 EV if played out.


However, the best way to clear this bonus is actually with KENO resulting in EV of $540.08! Keno clears at 100% contribution for each bet. So a $10 bet at keno clears $10 of your wagering requirement. They allow this because Keno has a much higher house edge than most other games, however it seems they overlooked a keno side bet they offer.

Mansion offers a odd/even side bet on Keno that pays 1.95:1. (2.5% house edge) In order to play this bet, you have to also pick numbers. Picking 3 numbers has a house edge of 6.962%. Mansion allows your side bet to be 100x larger than your number pick bet. So, you can bet $.10 cents on the 3pick and $10.00 on the side bet.

This will require 2179 total spins to clear the $22,000 wagering requirement. The total expected house edge on this is $559.92 leaving your expected bonus EV of $540.08.

Doing this manually would be tedious, but setting up a script to auto-run these spins is not difficult and results in an easy EV $540.


I've not calculated the SD or risk of ruin, but it should be relatively insignificant. Anyone want to add those calcs to this discussion?