Hnefatafl

Hnefatafl is an asymmetric game - one side defends, one side attacks. You choose which side to play.

1. Defenders control 12 dark blue-green glass pieces and the King (the amber piece with a droplet crown). Their goal: escort the King to any corner square to escape.
2. Attackers control 24 pale bone pieces surrounding the board. Their goal: capture the King before he escapes.
3. All pieces move like chess rooks - any number of squares orthogonally, blocked by other pieces.
4. Capture: sandwich an enemy piece between two of your own (or between your piece and a hostile square). Captured pieces are removed.
5. Hostile squares: the center throne and all 4 corner squares act as capture partners for both sides - even when empty.
6. King capture: the King is only captured when surrounded on all 4 sides by attackers (or 3 sides + throne).
7. Only the King may land on corner or throne squares.
8. Shieldwall: a row of pieces against an edge, flanked at both ends, is captured all at once.

Hnefatafl (pronounced roughly "NEFA-tah-fel", "the king's table") was the board game of the Viking-age north — played in halls and carried on ships from Ireland to Greenland, where lathe-turned walrus-ivory pieces were dug from the Norse farm at Sandnæs. It belongs to a whole family of "tafl" games of different sizes: the Irish brandub on a 7×7 grid, the Sámi tablut on 9×9, the Welsh tawlbwrdd, and larger 11×11 boards like the one scratched into a wooden plank found at Trondheim around 1100. Boards were often double-sided, with nine men's morris cut into the back — as on the gaming pieces and boards from the Gokstad ship and from Toftanes in the Faroes.

The objects are vivid. The 10th-century Ballinderry board from Ireland — the look this set follows — is turned from yew, drilled with 49 peg holes, marked with circular-arc motifs on its centre and corners, edged with a carved Borre-style ring-chain, and finished with two little human heads as handles. Graves at Birka in Sweden held playing sets of dark-green and light glass, some with kings carved with a face and crown. From Iceland, the Baldursheimur king is a tiny whalebone man gripping his own forked beard. In a riddle Odin poses in the saga of Hervör and Heidrek, the pieces are described as "weaponless maids — the dark ever sheltering, the fair ever attacking their lord," and it is that colour scheme this board follows: dark glass defending, pale bone attacking, amber king at the centre.

The game sits close to the dead and the gods in the sources. In the pre-Viking ship burials at Salme in Estonia (around 750 AD), gaming pieces were laid in the laps of the slain warriors, and a single king piece had been placed in the mouth of the highest-ranking man. In the Eddic poem Völuspá, the gods are pictured playing happily with golden gaming pieces in the world's morning — and after the catastrophe of Ragnarök, the reborn gods are said to find those same golden pieces again, lying in the grass.

A note on honesty: no medieval rulebook for hnefatafl survives. The one near-complete account is Carl Linnaeus's 1732 Lapland journal, which describes Sámi tablut — a king and his "Swedes" against twice as many "Muscovites," the king winning by reaching the edge of the board. The corner-escape goal, the shieldwall, and the other rules played here are modern reconstructions built on that single record (and on correcting a famous mistranslation of it), not a directly attested Viking ruleset. Chess arrived in the north in the 12th century and slowly displaced tafl. The legends and saga lines above are quoted as poetry and story, not as history.