Transgressive tic-tac-toe
I recently discovered an interesting variant of noughts and crosses. (Tic-tac-toe for US readers.) Games are played exactly as normal with the following twist:
Players can place either an X or an O on each go.
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Durham v Somerset, Surrey v Essex, and more: county cricket day three – live
119 days on top, a 13-game winless run … next stop Wembley on Walsall’s rollercoaster
US silence as Russia steps up attacks on Ukraine highlights Trump’s failure
Trump warms to Nippon Steel, backing ‘partnership’ with US Steel
Russian-led cybercrime network dismantled in global operation
Can you solve it? Naughty noughts and crosses
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