How to Play Hnefatafl: The Viking Chess Rules

Hnefatafl — Old Norse for “king’s table” — is the Viking-era board game that filled the role chess later took over in northern Europe. Two sides face off across an asymmetric grid: a small group of defenders protecting a king in the center, and a larger group of attackers trying to capture him before he can flee to safety. The game vanished from regular play by the 1100s and survived only in fragments. Modern players reconstructed how to play Hnefatafl from a Welsh manuscript, a Lapp variant called Tablut, and a few stone-carved boards.

What Hnefatafl actually is

The Tafl family — Hnefatafl is the most famous member — was played across Scandinavia, Iceland, the British Isles, and Sami territory from at least the 4th century until chess displaced it in the medieval period. Archaeologists have found game boards in burial mounds from Birka to Coppergate. The complete rules were never written down at the time, so what modern players use is a reconstruction built mostly from Linnaeus’s 1732 record of a Sami variant called Tablut.

The game is asymmetric, which is what makes it different from chess. The two sides have different piece counts, different starting positions, and entirely different win conditions. Attackers are trying to corner. Defenders are trying to escape.

What you need

A board and pieces. The most common modern board is 11×11 — that is the size used for most reconstructed Hnefatafl rules and the size matching the 12th-century Welsh manuscript. The game also runs on 7×7 (Brandubh), 9×9 (Tablut), 13×13 (Alea Evangelii), or 19×19 boards depending on the variant. For this guide we use 11×11, which is the most popular tournament size.

You need 24 attackers, 12 defenders, and 1 king. Attackers and defenders are usually plain pieces in two colors; the king is a third color or a marked piece. The throne square in the center and the four corner squares are special — only the king may stop on them, and they assist in captures.

Starting position

The king sits on the center square (the throne). The 12 defenders form a cross or diamond pattern around him, occupying the squares immediately surrounding the throne in a plus-shape three or four squares deep depending on local rules. The 24 attackers form four blocks of six along each edge of the board, positioned in a T-shape or cross at the midpoint of each side.

The exact opening varies between reconstructed rulesets, but the visual is consistent: small defending island in the middle, large attacking ring around the outside. Attackers always move first.

How pieces move

Every piece — king, defender, and attacker — moves like a chess rook. Any number of empty squares in a straight line (no diagonals), no jumping over other pieces. A piece must change squares on its turn; you cannot pass.

Only the king may stop on the throne or the corners. Other pieces may pass through the throne after the king has left it (in some rulesets) but cannot end their move on it.

Capturing pieces

Captures happen by sandwiching. If you move a piece so that an enemy piece is flanked on two opposite sides — left and right, or top and bottom — by your own pieces, the flanked piece is captured and removed. Critically, the capture is custodial: you have to be the one moving into the sandwich. Moving a piece between two enemies does not get it captured.

The throne and the corners count as friendly to either side for capture purposes. An attacker piece next to the empty throne with a defender on the other side is captured. This makes the center and corners dangerous transit zones for the wrong piece.

Capturing the king

The king is captured differently. To capture the king, attackers must surround him on all four sides — north, south, east, west — with attacking pieces or with the throne (when adjacent to it). Two-sided sandwich does not capture the king. The exception is some rulesets allow two-sided capture if the king is on the edge of the board with one side covered by the edge itself, but the four-sided full surround is the standard.

Win conditions

The defenders win if the king reaches any of the four corner squares. The corner is “safe” — the king cannot be captured there, and reaching it ends the game.

The attackers win if they capture the king (surround on all four sides) or if they so completely block the defenders that no legal move is possible.

Some rulesets also award the defenders a win if the attacker is reduced below a certain piece count, or if the attacker is forced into a stalemate position. These secondary win conditions vary by tradition.

The “shieldwall” capture

Some reconstructed rulesets, particularly Copenhagen Hnefatafl (the tournament standard developed in the 2010s), include a shieldwall capture: a row of enemy pieces along the board edge can be captured wholesale if your pieces surround them on three sides. This rewards aggressive play along the perimeter and prevents the attacker from camping the king’s escape routes too passively.

The major variants

Hnefatafl is the umbrella term, but the surviving rulesets each have a name and a board size.

Tablut

The 9×9 Sami variant Linnaeus recorded in 1732. Eight defenders and a king in the center, sixteen attackers around the edges. Tablut is the most historically secure Tafl variant because Linnaeus actually watched it being played. Many modern Hnefatafl rules are extrapolated from Tablut.

Brandubh

The Irish 7×7 variant. King in the center with four defenders around him, eight attackers in a cross at the edges. Smaller, faster, and the only Tafl game where the king moves only one square per turn in some traditions. Plays in 15 minutes.

Tawlbwrdd

The Welsh 11×11 variant referenced in a 1587 manuscript. Twelve defenders, twenty-four attackers, the same setup as standard Hnefatafl. Tawlbwrdd is often considered the historical basis for the modern 11×11 game.

Alea Evangelii

The huge 19×19 variant, mentioned in a 12th-century manuscript at Corpus Christi College, Cambridge. Played with around 48 attackers and 24 defenders. The size makes for very long games and is mostly of academic interest now.

Strategy basics

The defending side needs to open a corridor for the king. Defenders typically work to occupy or threaten the diagonals leading to a corner, then move the king up the cleared path. Sacrificing defenders to open a single straight line to a corner is a standard winning pattern.

The attacking side wants to occupy the four cardinal axes — the four straight lines from each edge through the throne. Holding those axes forces the king to travel via diagonals through enemy territory. Coordinated pincers against any defender that strays toward a corner will pick the defending side apart over time.

Attackers also win by tempo: every defender you remove makes the king’s escape harder. Even trades favor the attacking side because they start with twice the pieces.

Where to play Hnefatafl online

The site Aage Nielsen’s fellowship of tafl players at aagenielsen.dk runs the most active correspondence Hnefatafl community, including the Copenhagen ruleset tournaments. There are also free phone apps and browser implementations. The board is simple enough that you can make one from a chess board (8×8 with annotated squares for an improvised game) or print one off in two minutes. For the historical background, the Wikipedia article on Tafl games is a good starting reference.

Frequently asked questions

How many pieces does Hnefatafl use?

The standard 11×11 board uses 24 attackers, 12 defenders, and 1 king for 37 pieces total. Smaller variants like Brandubh (7×7) use fewer — 8 attackers, 4 defenders, and a king. Larger variants like Alea Evangelii use significantly more.

Can the king attack pieces?

In most rulesets the king is armed — he participates in captures the same way other pieces do. In some older reconstructions the king is unarmed and cannot capture, which makes the defending side harder to play. Modern tournament rules (Copenhagen) treat the king as armed.

What if no legal move is possible?

The player with no legal move loses. This usually only happens to the attacking side when defenders have blockaded them into corners — a rare endgame state called a “perpetual blockade” win for defenders.

Is Hnefatafl harder than chess?

Different. The asymmetry means the two sides require different thinking. Chess has more piece variety; Hnefatafl has fewer piece types but more strategic asymmetry. Computer analysis of Tafl games suggests the defending side has a slight advantage with perfect play, which the Copenhagen rules try to balance.

When did people stop playing Hnefatafl?

The game declined through the 1100s as chess spread north through Europe. The last documented active play was in Sami communities through at least the 1730s, where Linnaeus recorded Tablut. Modern reconstruction started in the 20th century and tournament play resumed in the 2010s.

The bottom line

Hnefatafl is the asymmetric strategy game chess might have been if the Vikings had won the cultural draw. It rewards a different kind of thinking — defending sides plan escape corridors, attackers plan suffocation patterns — and the historical mystery around it makes any game a small act of reconstruction. If you want a quicker reset between matches, the Chrome Dino game is one tab away. But Hnefatafl is the kind of game that gets better the second and third time you sit down to it.