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In this article, we give a description of the split exact sequences of leftskew braces. We define a free action of the second cohomology group of a leftskew brace $H$ by $Ann(I)$ on $Ext_{\alpha}(H, I)$ and show that this actionbecomes transitive if $I$ is a trivial skew brace. We also generalize theWell's type exact sequence for extensions by the trivial skew brace.

Extensions and Well's type exact sequence of skew braces