Practice · no wallet, no money

You are the fifth miner. Same rules as the live vein: 50 blocks hide in 1,000. The first three are hinted; the rest follow one hidden rule. Click a block to dig, one per second. Every strike pays pool ÷ blocks remaining.

you · 0 guesses · 0 blocks · 0¢

Hints · anchor 1 of 3

Each hint describes the block's last two digits. Tick residues you have ruled out; their blocks dim on the map.

Sequence · 0 of 50

Test a rule

Each next block = rule(previous), mod 1,000. The families: step (add k), mul (multiply by m), rot_step (rotate digits, add k), rev_step (reverse digits, add k), sq_step (square, add k). Two known blocks fit a parameter; a third confirms it. The map outlines what your rule predicts next.

need two known blocks to test a rule