Red to move - win/lose division

Red winBlue wincan he lose?
no
no
no
no


Red winBlue wincan he lose?
no
no
yes
no
no
no
no
no
no


Red winBlue wincan he lose?
no
no
yes
yes
yes
no
no
yes
no
yes
yes
no
no
no
no
no

Preliminary conclusion: the position of the two vacant squares does matter and blue has a clear advantage. No red win gives red even the option to lose.

nx2 boards
nx3 boards
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