Bagh Chal (बाघचाल) means the tiger's move, from bagh, tiger, and chal, move. It is played on a square grid of five points by five points, 25 points in all, with lines joining them horizontally, vertically and along the alternating diagonals that give the board its distinctive star pattern. Pieces sit on the intersections, not in the squares, and travel along the lines.
The two sides are not mirror images of each other, which is what makes the game interesting. One player has four tigers, placed on the four corners before play starts. The other has twenty goats, none of them on the board at the beginning. The goat player spends the first twenty turns feeding goats onto the board one at a time while the tigers are already moving and already hunting. Tigers capture by jumping a goat in a straight line to the empty point beyond, exactly as in draughts. Tigers win the moment they have taken five goats. Goats win if they can reach a position where not one of the four tigers has a legal move left.
That asymmetry produces two completely different playing experiences from one small board. The tiger player is looking for tactics: forks, sacrifices tempted into the open, a goat left one point too far forward. The goat player is doing something closer to engineering, building a solid front that advances a point at a time and never leaves a gap behind it. Beginners almost always find the goats harder, and almost always lose with them, because the correct goat move is frequently the one that looks passive.
The board belongs to the alquerque family, a very widely distributed pattern that also underlies Solah Guti in Nepal and India and several southern Indian hunt games. Similar tigers-and-goats games are played across South and Southeast Asia. The Nepali version, with its four tigers, twenty goats and five-capture threshold, is the one that became a national emblem, and you will find sets sold in brass and in painted wood in every tourist shop in Kathmandu.
In Thankot it is not a tourist object. It is played on shop steps and on boards scratched into the dirt, with bottle tops and pebbles for pieces, which is how the overwhelming majority of games in Nepal have always been played. The full Bagh Chal rules page sets out both phases, the capture mechanics and the strategy for each side in detail.