Jev Tetris Race

All boards receive the same piece sequence. One request per piece carries a Choice per board, with up to k candidate placements each. Candidates are ordered by column so nothing about their rank leaks.

Each option states what the placement does: lines cleared, new holes, stack height, bumpiness, landing height, and whether it uses the rightmost column.

Standard 10×20 Tetris with a 7-bag randomiser and hard drops. For each piece the code tries every rotation and column, simulates the drop and line clears, and measures the result. A neutral filter keeps the best k candidates so the question stays small; Jev chooses among them from the persona text alone. A board dies when the next piece has no legal placement. Most lines when the race ends wins.