When I was in college my friends and I came up with a chess variant that used the dice from Risk. You played chess normally but if you didn't like the move that

When I was in college my friends and I came up with a chess variant that used the dice from Risk. You played chess normally but if you didn't like the move that your opponent made you could 'challenge' it using the dice. Since you were challenging a legitimate move you would roll the two red dice and the defender would roll the three white ones. Whoever had the higher total would win. This meant that if you put the other player in check you still had to actually capture the king because they could challenge the actual capture and keep the game going. I think that if you lost the roll not only did you have to take your move back but you lost your turn as well. I remember it favored a style of play in which you could take your queen and start attacking pieces on the opponents back row. If they tried to capture it you could get lucky on the roll and keep attacking.