 To simulate the fact that in real cricket some batsmen are worse than others, there are restrictions on the cards the batsman is allowed to use when the lower order batsmen are in play.Specifically, there are no extra restrictions on the first five batsmen, then the next three are not allowed to use dollies to defend a higher card in the same suit, and the last three batsmen cannot use dollies or twos to defend higher cards.There is no similar way of simulating different bowlers’ abilities.