I think there is a bug with the advanced draw responses and bluf. What I found is playing a +4, and then a wild but I can't understand what is happening, and I don't know if that happens with a skip and reverse too.
Sorry because we were playing in Spanish.

So steps:

1. Play a +4 (without bluffing)
2. next person plays a wild.
3. press f.

Game 1

So my cards were a +2 blue and a +4
When nicoferreyrarp plays a +4 i am not bluffing because my cards are the mentioned.
I choose blue, in case someone reverses to don't get the cards myself but it says I am bluffing, which is not true.

paco_meralgo roba una carta.
paco_meralgo juega un3 rojo.
Turno de yanet.
paco_meralgo falló su intercepción y recibe 3 puntos de penalización.
yanet juega un3 verde.
Su turno.
3 verde
Usted juega un9 verde.
Turno de nicoferreyrarp.
Usted juega un0 verde.
Turno de nicoferreyrarp.
nicoferreyrarp juega un+2 verde.
Turno de paco_meralgo.
nicoferreyrarp dice: uno !
+2 verde
Turno de paco_meralgo.
paco_meralgo juega unrevertir verde.
Turno de nicoferreyrarp.
revertir verde
nicoferreyrarp juega un+4.
nicoferreyrarp pide verde.
Su turno.
Usted juega un+4.
Elija un color:
Usted ha pedido azul.
Turno de yanet.
gfriha dice: uno !
yanet juega uncomodín.
yanet pide rojo.
Turno de paco_meralgo.
paco_meralgo dice: ¡Es un farol!
¡Usted se ha tirado un grandísimo farol!
Usted roba 12 cartas.
nicoferreyrarp gana 0 puntos.
paco_meralgo gana 23 puntos.
yanet gana 21 puntos.
gfriha gana 131 puntos.

Game 2

Here happens the same, but my first thought was that I chose a color that I had after playing the +4, so that it was what it was getting, but here paco meralgo didn't have neither red or blue.

nicoferreyrarp juega un8 azul.
Turno de paco_meralgo.
nicoferreyrarp dice: intercepción !
nicoferreyrarp juega un8 verde.
Turno de nicoferreyrarp.
8 verde
gfriha dice: intercepción !
Usted juega un8 verde.
Su turno.
Usted juega unrevertir verde.
Turno de yanet.
paco_meralgo falló su intercepción y recibe 3 puntos de penalización.
nicoferreyrarp dice: intercepción !
nicoferreyrarp juega unrevertir rojo.
Turno de paco_meralgo.
yanet falló su intercepción y recibe 3 puntos de penalización.
revertir rojo
Turno de paco_meralgo.
paco_meralgo juega un+4.
paco_meralgo pide azul.
Turno de yanet.
Turno de yanet.
azul
yanet juega uncomodín.
yanet pide rojo.
Su turno.
Usted dice: ¡Es un farol!
¡paco_meralgo se ha tirado un farol!
paco_meralgo roba 6 cartas.
gfriha dice: tenías?
Usted roba una carta.
Turno de nicoferreyrarp.
nicoferreyrarp juega un+2 rojo.
Turno de paco_meralgo.
nicoferreyrarp dice: uno !
Turno de paco_meralgo.
nicoferreyrarp dice: intercepción !
nicoferreyrarp juega un+2 azul.
Turno de paco_meralgo.
paco_meralgo juega un+2 verde.
Turno de yanet.
+2 verde
paco_meralgo dice: intercepción !
paco_meralgo juega un+2 amarillo.
Turno de yanet.
Turno de yanet.
+2 amarillo
+2 amarillo
yanet roba 8 cartas.
nicoferreyrarp gana 0 puntos.
paco_meralgo gana 194 puntos.
yanet gana 70 puntos.
gfriha gana 72 puntos.

can you translate this last part of the game into English? it will be easy for modarators to understand.

Hello,
basically, just to confirm that I'm also quite sure that bluffs are buggy with advanced responses, especially after a draw 4, then another card to avoid the draw like a reverse, a skip or a wild, and then that person accuses a bluff. I'm quite sure the wrong color is checked. I don't really have any histories to contribute at the moment, I'll try to get something.
This one is especially annoying to test and investigate against a bot because bots accuse a bluff only with something like 2 or less cards in their hand.

Hello,

I think I will disable the F key for the next player if you pass the draw with something else than a +4.

Let's take an example: player A plays a +4 and asks for red, then player B plays a red skip, a red reverse or a joker. It doesn't make sense for player C to call out bluff. What does it means?

• If Player B has played a red skip or a red reverse, he is obviously bluffing, since he had red. Technically he's bluffing only if he has one more other red card in his hand, what doesn't make sense.
• If he played a joker and had another red card, let's say a red 8, does it means that he should have drew instead, so to be able to play that red 8? And if he hadn't that red 8, he would be fine? It doesn't make sense again.
• It's strange for player C to accuse player A of bluffing, too. The only one who can do it is player B. It's even more fun if player B played a red reverse, in which case player A could accuse himself? Funny! But useless and again total non-sense.

So unless you have a good argument, playing anything else than a +4 will simply disallow bluff accusation.

I Don't know what to say.
For me it has sense to say player A is bluffing, because When you choose to play a +4 you have the risk That other people accuse you and you draw those cards because the intention of player A was to lose 50 points from his hand and to make another person draw, so it's nice to say That he is lying, because is true. at the begining, if he had blue and the card in the table was blue 5, he was bluffing, doesn't matter what happens after. Unless it's another +4, so the responsability will be for That other player.
I understand That new rules are different, so it's just getting used to what you finally decide.

Hello,
I agree with Gfriha. In my view, in your example, really the only player who should be accused of bluffing is A. Reverses, skips or wilds shouldn't carry the same risk, so player B only passed the draw obligation to the next player.

On the other hand, I think your second scenario is already handled quite well at least as far as I have tried, that is, you can't be in a position of accusing yourself of bluffing. Pressing F simply doesn't do anything in that case if you're the one who started the stack.

I don't think disabling is a good option. Agreed with Gfriha and Nikola.

Another Spanish history
He didn't have the color.
Turno de Suesta.
Suesta juega un+4.
Suesta pide amarillo.
Turno de PabloIranzo.
Turno de PabloIranzo.
amarillo
PabloIranzo juega uncomodín.
PabloIranzo pide rojo.
Su turno.
rojo
Usted juega un+2 rojo.
Turno de Suesta.
Suesta juega un+2 amarillo.
Turno de PabloIranzo.
PabloIranzo dice: ¡Es un farol!
¡Suesta se ha tirado un farol!
Suesta roba 10 cartas.