Players who combine different card counting variations in Blackjack typically use a combination of strategies to adapt to different situations and opponents. They may use one variation to track the overall count, and another to track specific card values or patterns. For example, they may use a basic plus-minus system to track the count, while also using a KO (Kosower) system to track specific card values. By combining different variations, players can gain a more comprehensive understanding of the deck and make more accurate decisions about which cards to play and when to bet or fold. This allows them to adjust their strategy to changing circumstances and increase their chances of winning.