Chess boards for a tournament: sizes, standards and how many

The base rule: one board per two players. Twenty people, ten boards; thirty, fifteen.

With fewer, the event does not stop but it takes twice as long: some pairs play in a second wave and the round stretches out. Occasionally that is planned - when the boards are brought by the players and the count is not known in advance. But know it beforehand and build it into the schedule.

The margin is not only for extra people: boards break, pieces go missing, and it is worth keeping one set free for analysis and demonstration.

In the Vibe Chess app the number of boards is set when the event is created, and it tells you honestly: «you need N for everybody, some pairs will wait». That saves an unpleasant discovery in round one.

For official competitions the equipment dimensions are specified. The reference figures:

• King height - 95 mm, with a tolerance of about 10%, and the order of heights must hold: king above queen, queen above bishop and so on.
• Base diameter of a piece - 40 to 50% of its height. Too narrow and the pieces are unstable; too wide and the board is crowded.
• Square size - 50 to 60 mm. Large events most often use 55 mm paired with a 95 mm king.
• The ratio that matters - the king's base should occupy roughly 75 to 80% of the square. This is the key parameter: pieces that get lost on the square or overhang its edge make the game awkward.

That gives a tournament board of about 50 to 55 cm a side, with a 1.5 to 2.5 cm border carrying the file letters and rank numbers.

A club or company event need not follow the specification strictly, but check that one ratio: a set whose pieces are too big for the board spoils the impression more than the absence of any branding.

The tournament standard is the Staunton pattern - the recognizable shape that has been the international norm since the mid-nineteenth century. What makes a good set:

• Weighting. Weighted pieces do not fall over when brushed and feel right in the hand.
• Felt bases. Quieter, and they do not scratch the board.
• Two queens per side. Needed for promotion. The classic amateur problem: a pawn promotes, there is no queen, and an upturned rook goes on the board - which is formally wrong.
• Contrast. They need not be black and white; cream and dark brown is the classic. What matters is that the colours separate confidently under your lighting.
• Material. Plastic is practical and cheap, wood looks better and costs more. For a tournament in a bar plastic is actually preferable - it survives a spilt drink.

The working choice for a travelling event is vinyl plus weighted plastic pieces: light, inexpensive, easy to carry and no great loss if damaged. Keep wooden boards for the top tables, where the leaders play and the spectators and the photographer are looking - packing and transport.

Prices vary by country, but the ratios hold: a vinyl board is the cheapest item, a weighted plastic set of pieces costs several times that, and a folding wooden board with pieces several times more again. Across ten boards it adds up, which is why the alternatives are worth knowing.

• Ask the players. At club events half the sets are usually brought by the participants - it is enough to say so in the announcement.
• Hire. Chess clubs and federations sometimes lend equipment for an event. For a one-off corporate game, the only cheaper option is booking a tournament that arrives complete with its own.
• Partner with the venue. Bars and event spaces that run tournaments regularly often buy sets themselves - it works out better for them than arranging it every time.
• Start small. A first event can run on eight boards with two waves per round, and then you know from experience whether to invest.

What not to economize on: quantity. A shortage of boards damages the schedule more than any other shortage.

• Clocks - one pair per board. Options and alternatives - clocks for a tournament.
• A table number - a card or simply an A5 sheet with a large figure. Put out before the players arrive.
• A result slip - if results are collected on paper.
• Scoresheets - only at classical events; blitz and rapid are not recorded - notation and scoresheets.
• Pens - the small thing there are never enough of.

How to arrange all of it in the room - seating and setup.