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The textbook solution is backtracking — undo your last decision and try a different tile. My solver tracks every possibility it removes during propagation (a "trail" of deltas), so it can rewind cheaply without copying the entire grid state. It'll try up to 500 backtracks before giving up.
，详情可参考新收录的资料
Nature, Published online: 11 March 2026; doi:10.1038/d41586-026-00727-1
Кадр видео: Олександр Федієнко / Telegram，详情可参考PDF资料
USB-C for power, runs at 5V，更多细节参见新收录的资料
Rising oil prices and market turmoil as a result of the war in the Middle East are fuelling fears the cost of living crisis could get even tougher. Energy bills, mortgage rates and petrol prices could all surge in the fallout from the conflict. So how much could the war tighten the screws on our personal finances? Lucy Hough speaks to the deputy editor of the Guardian’s money section, Rupert Jones – watch on YouTube