Originally posted by AlphaAlekhine
Don't say in high level play they don't make silly mistakes. Skewers and forks happen all the time in time trouble. Or they just merely occur. Remember: Kramnik missed a mate in one against a computer (a simple one). I remember a Steintz game where he tore his opponent apart with forks and skewers. This would be something interesting, in fact. See how many GM games you can find with obvious blunders. You'll be surprised.
A skewer cannot occur with only a Q & 2Rs on the board.
Once the Rooks are joined then there is no way a GM would blunder. The fork would have to occur as the last move in a series of exchanges in which case we are not really talking Q vs 2R ending.
It is more likely the player with the queen would blunder resulting in a check that loses the queen as in my example a few posts back that gave a forced win for the 2 Rs.
Other than this example nothing short of a horrendous blunder would give any other result but if your approach is always to be that either player can win because the other side might blunder then any assessment of any position becomes pointless.
The question has to be given best play who will win in an ending K&Q vs K&2Rs
and the answer is except in very exceptional circumstances when the weaker sides king is badly placed when the 2Rs will win the gane is a draw
. Please note the weaker side is the Queen NOT
the 2 Rooks.