Originally posted by @ian47And you have to Claim the drwa, no automatic drawing.
Just how many repeat moves have to be made before a called draw?
The moves do not have to be consecutive.
If this position was reach with White to play on move 40, 45 and 55.
White could, before making his 55th move, claim a draw stating the position
was about to be created for the 3rd time.
Officially there is no such thing as a perpetual check (though everyone uses the term)
A perpetual check will produce a three fold repetition of a position when a draw can be claimed.
A player may claim a draw if after 50 moves no pawn move or a capture has been
made during that time. What may not be too well known is if no capture or a pawn
move has been made after 75 moves An arbiter can stop the game and declare it drawn.
This is stop two happy chaps playing on and on and on with neither side
claiming a draw under the 50 move rule.
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Originally posted by @bigdoggproblemNecessarily meaning there aren't any -- en passant rights are lost after the first move.
And with the same en passant rights [usually meaning there aren't any]
Also note that it doesn't have to be the same move which created that same position. In Greenpawn's example, it could've been reached by moving the rook twice, and the king the third time. Or the moves to reach that position could've been the rook all three times, but from three different directions. All valid: it's the three times repeated position which is important, not the moves.
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Originally posted by @ketchuploverIf you can't mate at all, yes. If you can't force mate but can still help-mate, no.
Is insufficient mating material an automatic draw?