About Wood Block Sudoku - where Tetris meets Sudoku
Wood block Sudoku puzzles, made popular by apps such as Blockudoku and Woodoku, take the line clearing of falling-block games and put it on a Sudoku board. Nothing falls and there is no clock: you choose where every piece goes, so thinking ahead is everything.
Tetris on a Sudoku board
Falling-block games clear a row when it is full. Block puzzles such as 1010! dropped the falling and let you place pieces anywhere on a grid. Wood block Sudoku went one step further and used the 9x9 Sudoku board, so a full 3x3 box is cleared as well as a full row or column. The wood look keeps it calm and tactile.
The rules
You get three pieces at a time and drag them onto the board in any order. A full row, column or 3x3 box disappears, and several can disappear at once. Pieces cannot be rotated. A new set of three comes when the tray is empty. The game ends when none of your pieces fits.
Combos and streaks
Clearing two or three things with one piece is worth far more than clearing them one by one, so it can pay to build up several nearly full lines and boxes and finish them together. A streak rewards clearing something on move after move.
Strategy tips
Keep the board as open as you can, with big empty areas rather than scattered holes. Think about all three pieces before you place the first, because the order matters. Keep room for a 3x3 square and a 5-long line, the hardest pieces to fit, and use the holder for a piece that would spoil the board now.
Frequently asked questions
Is Wood Block Sudoku the same as Sudoku?
No. It uses the same 9x9 board with nine 3x3 boxes, but there are no numbers. You fill the board with wooden blocks and clear full rows, columns and boxes.
Is there a time limit?
No. You can think as long as you like about every move. The game only ends when no piece fits.
What is the best strategy?
Keep the board open, plan all three pieces together, aim for combos, and keep space for the big pieces.
Related tools
Wood Block Sudoku Puzzle
Play Wood Block Sudoku free in your browser. Drag wooden pieces onto a 9x9 board and clear rows, columns and 3x3 boxes. Combos, streaks, a holder slot and no time limit.
Mancala
Play Mancala (Kalah) free in your browser. Sow the stones round the board, land in your store for an extra turn and capture your opponent's stones. Play the computer on three levels, a friend, or watch two computers.
About Mancala - one of the oldest board games
Mancala is one of the oldest board game families in the world. Learn where it comes from, the rules of Kalah, and strategy tips for extra turns and captures. Then play Mancala free online.
Tangram Puzzle
Play the old Chinese tangram puzzle in your browser. Drag, turn, and flip the seven tans to fill a cat, a swan, a runner, a sailboat, or the square, without overlaps. Ask for a hint, or watch it solve.
Ready to try it?
Open PictorX in your browser — no install, no credit card required to start.
Play Wood Block Sudoku