Go (game)
The playing pieces are called "stones". One player uses the white stones and the other, black. The players take turns placing the stones on the vacant intersections ("points") of a board. Once placed on the board, stones may not be moved, but stones are removed from the board if "captured". Capture happens when a stone or group of stones is surrounded by opposing stones on all orthogonally-adjacent points. The game proceeds until neither player wishes to make another move. When a game concludes, the winner is determined by counting each player's surrounded territory along with captured stones and komi (points added to the score of the player with the white stones as compensation for playing second). Games may also be terminated by resignation. A teacher might simplify the explanation by saying to a student "you may place your stone on any point on the board, but if I surround that stone, I will remove it."
Lotus (board game)
If you have two players, one player is given ten white game pieces while the other player gets ten black game pieces. The pieces are stacked in the middle of the board as one stack of 4 pieces, one stack of 3 pieces, one stack of 2 pieces and one stack of 1 piece. If you have 3 or 4 players then each player gets 6 pieces, stacked in the middle in stacks of 3, 2 and 1. Each player takes turns moving their pieces in an attempt to get to the exit space on the game board. A player can only move a piece that is on top of a stack or that is the only piece left in a stack. The height of the stack determines how far you can move your piece. Therefore; a piece in a stack of 1 can only move 1 space forward, a piece in a stack of 2 can move 2 spaces forward.