OpenSpiel game methods: max_chance_nodes_in_history

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max_chance_nodes_in_history()

Returns the maximum number of chance nodes that can appear in any history (sequence of states) of the game. For deterministic games this is 0. For stochastic games it defaults to max_game_length() as a loose upper bound, though individual games may override this with a tighter value.

Examples:

import pyspiel

# Deterministic game: no chance nodes
game = pyspiel.load_game("tic_tac_toe")
print(game.max_chance_nodes_in_history())   # Output: 0

# Stochastic game: chance nodes from card dealing
game = pyspiel.load_game("kuhn_poker")
print(game.max_chance_nodes_in_history())   # Output: 12