How does splitting to multi-hands affect others?

Some card counters play one hand at negative counts but then spread to two or more hands at positive counts. But what happens when someone else does this at your table? This chart is very much like that two pages back. The first sim had two players: a basic strategy player in seat one and a Hi-Lo card counter in seat two. The second sim was the same, but a third player plays one hand at true counts of zero and below, two hands at true count +1 and three hands at true counts +2 and above. We are interested in the effect on the Hi-Lo player in seat two. The chart displays the win rate by true count for the seat two Hi-Lo player in each sim. The red area displays the win rate for each true count for the Hi-Lo player at the first table. The green area shows the win rate for the same player, only at a table where the multi-hand player plays. As on the previous page, we can see that at the higher counts, where we win money, our winnings are reduced by the new player as he is stealing some of the good cards. Overall, the Hi-Lo player's edge drops from 1.37% to 1.15% — worse than the effect of a back-counter.

The Blackjack basic strategy player is not charted here but is also impacted. For the basic strategy player, the house edge is increased from .38% to .48%.

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 © 2009 Norman Wattenberger