In reality I got the same solution as cf and JAB, but I then spent ages trying to come up with something different and this was the best I could manage.

Not my first go either. My first effort was the ramp on the end of three yellows, which looks like it will win, but too slowly.

I thought there was only one solution (with slight variants on triangle placement). you found one that is properly different.

    And no, it was very much not my first go :-)

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