Question not clear

In example
2
4 2

how 2 is the winner
there is only one move possible i.e split 4 into 2,2

move 1: 4 into 2,2 by player 1
move 2: out of three piles of 2, one is split by player 2
move 3: out of 2 piles of 2, one is split by player 1
move 4: last pile of 2 is split by player 2
player 1 has no move available and hence he loses

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