Checkmating in time trouble

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h15h

I recently had a winning Rook + King vs. King, which I know how to win. However, I had only 15 seconds left and wasn't able to win

Any tips to get faster at this checkmate?

Sensei-T

Just practice it against a bot, that's all I can say.

Fetoxo
Good luck with that. That is very hard to do in 15 seconds, because the opponent has a lot of move choices.