https://erich-friedman.github.io/packing/dominsqu/ n=20：Joshua Wolk，6.91421+→6.89791+ n=25：Joshua Wolk，7.70710+→7.64575+ n=26：Joshua Wolk，7.82842+→7.79511+ n=27：Grigory Merzon，8→7.98480+
P90 · 多米诺骨牌装入正方形 · 讨论
https://erich-friedman.github.io/packing/dominsqu/ n=20：Joshua Wolk，6.91421+→6.89791+ n=25：Joshua Wolk，7.70710+→7.64575+ n=26：Joshua Wolk，7.82842+→7.79511+ n=27：Grigory Merzon，8→7.98480+