hex
https://www.hexwiki.net/index.php/Main_Page
http://cambolbro.com/games/hex/
http://www.mseymour.ca/hex_book/hexstrat.html http://www.mseymour.ca/hex_puzzle/hexpuzzle.html
could be played on a square grid by allowing connection on one diagonal
- aka square grid hex http://www.marksteeregames.com/Square_Grid_Hex.pdf
- topology is identical to normal hex
first player has an advantage, fix with pie rule
- second player may choose to be first player
variant: crossway,
- http://www.marksteeregames.com/Crossway_rules.pdf
- square grid allowing both diagonals but disallowing crosscut