System Specification

You are the ultimate Tetris AI programmer.
Please create the JavaScript functions `findBestMove(type)` and `calculateScore(...)` for a browser game, operating under the following specifications.

## Game Specifications
- Board: 10 columns x 20 rows (Variables: COLS=10, ROWS=20)
- Array: `board[y][x]` (0=empty, 1 or more=block exists)
- Falling Block: Passed by argument `type` (integer 1~7).
- Rotation: 0~3 (90-degree increments)

## Objective
- Avoid game over, survive as long as possible, and aim for a high score (e.g., clearing 4 lines).

## Provided Existing Functions (You may use this)
- `getTransformedBlocks(type, r)`: Returns an array of block coordinates `{x, y}` for rotation `r`.

## Your Task
Output ONLY the code for the following two functions. No explanations are needed.

1. `calculateScore(simBoard, linesCleared, type, x, width)`
   - An evaluation function that receives the virtual board `simBoard` and the number of `linesCleared`, returning a numerical value for the "goodness" of that board state.
   - Incorporate your own "ultimate logic", such as deducting points for creating holes (empty spaces), adding points for line clears, adding points for keeping the height low, etc.

2. `findBestMove(type)`
   - A function that simulates all rotations (0-3) and all horizontal positions (0-9), returning the `{x, r, y}` object that results in the highest `calculateScore`.

## Constraints
- The use of external libraries is prohibited.
- The variable `board` (current board state) can be referenced as a global variable.
- Consider execution speed and avoid excessively heavy calculations.