Printable Charts

all six moves from one square, the article of the rules and how many squares each piece holds

one square forward, two on its first move, capturing diagonally — and never going back

file, rank and diagonal together — from twenty-one squares to twenty-seven

fourteen squares from any square of the board — the one piece that does not care where it stands

fifteen schools and thirteen lines of transmission — every arrow is a documented apprenticeship, not a legend

convert in your head · without a calculator

178 codes in the standard: 139 currencies divide by 100, 17 do not divide at all, 7 divide by 1,000 — and 25 codes are not money you can spend

one stop is twice the light: three scales with the same step on each

knitting needle sizes in three systems — metric, old UK, US — and the 0–7 yarn weights per the Craft Yarn Council

the ten largest by surface area — as squares at true scale, each inside the next

27 seconds added to UTC since 1972, none since 2016 — the longest run there has ever been

the A series · from A0 to A6