When clicked, a bulb and all the bulbs from the same row and column will turn on (if it's off), or turn off (if it's on).
(Note: White circles indicate lighted bulbs.)
For example, in the diagram below, when A is clicked, A, B, and C will turn off.
What is the minimum number of clicks required to switch off all the bulbs in the diagram below?
If you liked this problem, check these out: Lights Out , Lights In , and Lights Around .
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