Q. What is this and how does it work?
A. This is a website where you can play TwentyNine (29), a card game particularly popular in South Asia, with your friends online. These are basically the steps to play (Feel free to also check out The Rules of TwentyNine).
1. Create a free account, you will need a valid email address for this.
2. Add your friends, who must also have accounts, to your friend list. This can be done from Dashboard->Friends. You must know what email address they used to register.
3. At least one of the players of any game must have a Standard or Standar Guest account. That player can host a game through Dashboard->Host. The host basically sets up which friends will play, and a few other settings of the game. The host can also reset the game.
4. Once a game is hosted, all friends of the host can see this in either Dashboard->Join (if they are one of the players) or Dashboard->View (if they are not one of the players). The host will see the game in Dashboard->Host.
5. The game can start once all 4 players of a game joins the game. You and your friends will have to coordinate, outside of this website (via phone, social media, in-person etc.), regarding when you will play.
In addition to setting up players, a host can also set a conference link, e.g., Skype, Zoom etc., for the participants to have an online conference call. If the link is set, it will show up in the game screen.
PLEASE NOTE that the game uses javascript which sometimes may not load properly at the first time (This may happen often!). In that case, just reload the page until it loads properly. If any time during the game you feel the game is not responding, which should not happen often, just reload the page. While the game is tested to work on various web browsers, Google Chrome is the recommended browser at this point.

Q. Do I need any special device or app to play?
A. No, you don't need any particular device or app, since it is designed to work with any modern web browser. Make sure javascript is not disabled in your browser.

Q. What are the reset buttons in the game for and who can use those?
A. Below are the various resets, which can be used by the host of the game only. Others can see these buttons, but can't use them.
Score Reset: Resets the score of the game to 0/0.
Round Reset: Resets the onoging round of play, and restarts it from the Deal step.
Deck Reset: Resets the deck of the card to its initial state. Our shuffling algorithm mimics real life practices, which may sometimes lead a deck being stacked to certain extremes (e.g., you may find the cards are being distributed too evenly or too unevenly). That's the time to use this reset.
All Reset: Performs all three of the above resets.

Q. What is the 'view' feature and how does it work?
A. All friends of the host of a game, except those who are playing that game, can view the game, as if they were in the same virtual room. By default, they only see the host's cards, but if they want they can click on other players' cards and see those as well (clicking toggles the visibility of those players' cards).

Q. What do you do to prevent cheating in the game?
A. Nothing! Cheating in an online card game is very easy, and it can be done in many different ways. We hope you and your friends know better, and nobody will ruin the fun by cheating.

Q. How do you handle special rules and features of the game?
A. Below is a list of the special rules and features of the game and how we handle them.
Round invalid rules:
1. If the first person to call has no points in the first four cards. The system automatically detects this and deals again. So you should not see this ever happening in the game.
2. If any of the players has no points in eight cards.
3. If any side (the guest team or the host team) has no trump card between the two players.
4. If 7th card is used as trump, there are three options, which the host of the game can choose from. The default option has no restriction - play continues. The second option is that if the player winning the bid has no trump card with points the round is invalid. The third option is that if the player winning the bid has only one trump card the round is invalid.
5. If all 8 leads finish but the trump is not shown (this does not apply to Single Hand round).
6. If one player gets all 4 Jacks (CJ, DJ, SJ, HJ).
7th card show:
If the 7th card is the only card you have of its suit, and someone plays that suit, you must show the trump card (7th card), and then play it. You cannot play any other card in that scenario. The same policy applies if the 7th card is the last remaining card in hand. This is done to simplify the rules and make sure the game implements two basic rules - a player has to play a card of the suit of a lead as long as he or she has such a card and the 7th card cannot be played before it's shown.
Score reset after a set
By default, the remaining score remains after a set (red or black set). This can be changed to reset the scores once a set is reached. The host can choose from these two options in Dashboard->Host.
Redouble with 7th card:
The winner team of the bid can call redouble with only four cards in hand, or he/she can wait till the next cards are dealt. The caller will have a chance to call redouble after seeing the 7th card. In that case, no setdouble call is allowed.
Single Hand:
Single Hand call is allowed even when a regular redouble is already called, since Single Hand has the potential to become a higher point call. There must be at least one risk card in hand, otherwise a Single Hand call is not allowed. In a Single Hand play, after playing the very first card, the caller can see his or her partner's card - just click on the partner's card in the game screen.
Bonus score
For a regular call with no double call, a bonus score is allowed if the winning team wins all 8 leads. There is no automatic double even when the bid exceeds 20.
Round ending before 8th lead
If a Round is decided, including showing of trump, bonus score etc., then the system will finish that round immediately, even if it's not the 8th lead.
Maximum score in a lead
Redouble is allowed for Single Hand call, making the round worth a score of 12! Set double is allowed for Double/Redouble, making the round worth a score of 6!
Minimum/Maximum Bid
Minimum bid is 16, maximum is 28. Even with Marriage, the target must remain within this limit.

Q. How do you handle web security, personal information, and data?
A. We use industry standard encryption (https) for web communication. We store bare minimum personal information or data in our database (e.g., your email and first name). Our login is handled by a 3rd party (which means we do not store your password in our website/database). We do not collect or share any more data than is necessary to provide the intended service.

Q. What are the varous types of accounts?:
We have 3 types of accounts.
Basic:
Can connect with up to ten friends.
Can join (play) or view any game hosted by a friend.
Cannot host any game.
Standard:
Can connect with up to fifty friends.
Can join (play) or view any game hosted by a friend.
Can host one game.
Standard Guest:
Same as Standard.

Q. What are the Terms and conditions?
A. The service provided through https://www.ashfaqtechnology.com/twentynine is provided AS IS without warranty of any kind.
Any risk or liability as to the results of the usage of this service is assumed by the user.
These terms and conditions can change at any time without any prior notice to the user.

Q. Where do I contact for additional information?
A. Please send an email to ashfaq.technology@gmail.com for questions, issues, or constructive feedback. Be sure to begin the Subject with "TwentyNine: ".

Q. What are the rules for playing TwentyNine?
A. Although TwentyNine rules are less standardized than some of the other popular card games, e.g., contract bridge, most variations of TwentyNine follow a similar set of core rules (See, e.g., Rules of Card Games: Twenty-Nine in pagat.com, Twenty-eight (card game) in wikipedia.org). Below we have summarized these rules, with a few legal variations that the players can decide for each game. If you are a beginner, we suggest you go through the overview section thoroughly, then go through the remaining sections as quickly as you can, and then try a few rounds of trial play with your friends, either in person or online. Playing the game would be the quickest way to get yourself familiarized with its rules. You can come back and read all the sections here as you need. Ready? Here is How to Play TwentyNine or The Rules of TwentyNine. Good luck!

Overview:
TwentyNine is played with 4 players divided into 2 teams where team members sit across from each other. 8 cards from each of the 4 suits are used in the game, the remaining cards from the suits are used for score-keeping. The joker cards are not used at all. The 8 cards of each suit in play are worth a total of 7 points, and in this order/rank - J: 3, 9: 2, A: 1, 10: 1, K: 0, Q: 0, 8: 0, 7: 0. That brings the total points with all 32 cards in play to 28. No card suit is superior to others, unless that suit is set as the Trump Card Suit. Cards numbered 6 are used for score keeping (each Red symbol represents a net positive score and each Black symbol represents a net negative score, a pair of red and black cards are used for each team), the rest are used either to set the Trump Card Suit or for score keeping.

A round of play begins with the dealer dealing 4 cards at a time to each of the players, starting from the player to his or her right side and going counter-clockwise. Each of the players then takes turn in bidding - where they claim that they will have a certain number of points once the round will be played out. The bid starts from the player who was dealt the first set of cards, and goes counter-clockwise. A player can pass or call between 16 and 28, but to have a chance to win over an existing bid, the new call must be higher. The current winner of the call always has an advantage to revisit his/her bid, if the next player calls a higher bid. He or she only needs to match the new call in that case. The highest bidder eventually wins the call and sets the Trump Card Suit. The setting of the Trump Card Suit is done by putting the unused cards (numbered 2-5) face down and making one of the cards from the intended suit the bottom card. At some point in the game, the trump card is shown by turning this pile upside down. Until then, only the winner of the bid knows which suit is trump.

Once the dealing, bidding, and setting-of-trump is done, the dealer deals the rest of the cards - 4 cards at a time to each of the players, starting from the player at his or her right side and going counter-clockwise. Then a regular round begins.

The very first lead is given by the person who was dealt the first set of cards. The players play their hands one by one in each lead, going counter-clockwise. A player must play the suit of the first card played in the lead (lead-suit) as long as he or she has it. If a player doesn't have any card of the lead-suit, he or she can play any other card instead or chose to show the trump card (unless it's already shown) . For the lead when a player asks to show the Trump Card Suit, he or she must play a card of that suit (trump card) if he or she has it . In general, Trump or over-trump is not a must in TwentyNine. The strongest card in the lead-suit wins the lead, unless someone plays a trump card, in which case, the strongest trump card wins. Note that, a card of a Trump Card Suit counts as a trump card only after the Trump Card Suit is shown, and as long as the lead-suit is not the Trump Card Suit.

The player who played the winning card starts the next lead. Once all 8 leads are done, if the winner of the bid is able to get equal or more points than the bid, that team wins the round and gets a positive score. If they can't, they lose the round and gets a negative score. A positive (or negative) score for a team must be first used to cancel out an existing negative (or positive) score if they have any negative (or positive) score. At any given time, a team's score would lie between -5 to +5.

6 net positive scores constitute a Red set, 6 net negative scores constitute a Black set. The goal of the game is to win rounds to reach a Red set, or make the other team lose so they reach a Black set. Once a set is reached, there is a winning team! If the players wish to continue, the remaining scores may or may not be reset to 0, depending on what the players agreed upon before the game started.

Note that there are many other scenarios that can happen during a game, such as raising the stakes of a round, using the 7th card to set the Trump Card Suit, a round being invalid etc., those are covered in the details section.

Also note that, in a regular round, the sum of the minimum points that the two teams aim to get is 29 - the name of the game!

Cards in play:
A deck of cards contains 52 cards of 4 Suits, and a few Joker cards. The suits are Clubs (C), Dice/Diamond (D), Hearts (H), Spade (S). Each suit has 13 cards numbered A, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K.

8 cards from each of the 4 suits are used in TwentyNine, the remaining cards from the suits are used either to set the Trump Card Suit or for score keeping. The joker cards are not used at all. The 8 cards of each suit in play are worth a total of 7 points, and in this order - J: 3, 9: 2, A: 1, 10: 1, K: 0, Q: 0, 8: 0, 7: 0. That brings the total points with all 32 cards in play to 28. No card suit is superior to others, unless that suit is set as the Trump Card Suit. Cards numbered 6 are used for score keeping. Each Red symbol represents a net positive score and each Black symbol represents a net negative score, a pair of red and black cards are used for each team. The rest of the cards are used either to set the Trump Card Suit or for score-keeping.

Teams, Objectives, and Score-keeping:
TwentyNine is played with 4 players divided into 2 teams where the team members sit across from each other, and next to their opponents.

The objective of the game is to win as many rounds as possible to reach a Red set (6 net positive scores) or make the opponent lose as many rounds as possible so they reach a Black set (6 net negative scores). Each round can be of two types, Regular or Single Hand, and each of them primarily has two stages - the call/bid stage and the lead/play stage. In a Regular round, one of the players win the bid in the call/bid stage by claiming that their team will have a certain number of points once the round will be played out. If they are able to actually get that many points in the lead/play stage, they get a positive score. If they cannot, they get a negative score. The actual score may be 1, 2, 4, or 6 - depending on whether the stakes were raised during the call/bid stage. In a Single Hand round, one of the players win the bid in the call/bid stage by claiming that he/she will win all 8 tricks/leads without using any help from his/her partner once the round will be played out. Unlike a Regular round, where all 4 players take part in the lead/play stage, the partner of the bid winner sits out in a Single Hand round. The bid winner starts the lead/play stage and their team wins the round if he/she can win all 8 tricks/leads. Even if he/she loses one lead, their team loses that round. A Single Hand round is worth 3 points, unless the stakes were raised during the call/bid stage which could make it worth 6 or 12 points. In addition to the active number of players in the lead/play stage, there are two more important differences between a Regular round and a Single Hand round. In a Regular round, the winner of the call/bid sets the Trump Card Suit, but the first lead starts from the player who recieved the first set of cards. In a Single Hand round, there is not Trump Card Suit, and the first lead starts from the player who won the call/bid.

The score of each team is kept using C6,D6 and H6,S6 pairs. Each Red symbol represents a net positive score and each Black symbol represents a net negative score. The pair of cards are put on top of each other - face to face - such that only the intended number of symbols of the intended color are visible. At any given time, the score can range from -5 to +5.

In both Regular and Single Hand rounds, each player receives a total of 8 cards, and the players may not see/show each other's cards in hand at any time during the game, with one exception. In a Single Hand round, the winner of the call/bid can see his/her partner's cards in hand after playing the very first lead. The players may not also look at the cards that are already played in an ongoing round, with one exception. If the last card played/shown was removed from the table too quickly, without giving everybody enough time to see it, a player may ask what that card was and the others must provide him/her with the answer. During the course of a round, the partners may not advise each other on how to play their cards.

Round Stage 1: Deal the first half of the cards
A round of play begins with the dealer dealing 4 cards at a time to each of the players, starting from the player to his or her right side and going counter-clockwise. 16 cards are dealt in this stage. Before dealing, the dealer shuffles the cards, and the player to his or her left does one final split of the pile.

Round Stage 2: Regular Call/Bid
Each of the players then takes turn in bidding - where they claim that they will have a certain number of points once the round will be played out. The bid starts from the player who was dealt the first set of cards, and goes counter-clockwise. If that first player has no point cards in his/her four cards, the round becomes invalid, and the cards are dealt again. A player can pass or call between 16 and 28, but to have a chance to win over an existing bid, the new call must be higher. The current winner of the call always has an advantage to revisit his/her bid, if the next player calls a higher bid. He or she only needs to match the new call in that case. At the end of this stage, typically, a highest bidder eventually wins the call and moves on to set the Trump Card Suit. But if all four players pass, the round becomes invalid, and the cards are dealt again.

Round Stage 3: Setting of the Trump Card Suit
The call/bid winner sets the Trump Card Suit for the round. There are two variations here the call/bid winner can choose from. In the first variation, setting of the Trump Card Suit is done by putting the unused cards (numbered 2-5) face down and making one of the cards from the intended suit the bottom card. At some point in the game, the trump card is shown by turning this pile upside down. Until then, only the winner of the bid knows which suit is trump. This variation is called Trump in Hand, meaning the player is finalizing the Trump Card Suit based on the cards in hand. In the second variation, the call/bid winner announces that the suit of his/her 7th card (yet to be dealt) will be the Trump Card Suit. In this case, no setting is done in this stage. Once the remaining cards will be dealt, the call/bid winner will visibly separate the 7th card, see it, and place it under the pile of unused cards (numbered 2-5). That 7th card cannot be played until it's shown - either by the request of a player to show the Trump Card Suit, or if that card becomes the only option to play. Once it's shown to all, the call/bid winner will take this card in his/her hand, and use one of the unused cards (numbered 2-5) to show the Trump Card Suit for the remaining of the round. This variation is called Trump by the 7th card, meaning the player is letting his/her 7th card determine the Trump Card Suit.

Round Stage 4: Regular Double/Redouble/SetDouble Call
Once the call is final and the trump is set (either Hand or 7th), any player of the oppnent team of the call/bid winner can raise the stake of the round by calling Double. That will increase the worth of the round to 2 scores, instead of its regular worth of 1 score. If a Double call is made, any player of the team of the call/bid winner can raise the stake of the round furhter by calling Redouble. That will increase the worth of the round to 4 scores. If a Redouble call is made, any player of the opponent team of the call/bid winner can raise the stake of the round furhter by calling SetDouble. That will increase the worth of the round to 6 scores. If the call/bid winner chose 7th card for the Trump Card Suit, they will have the option of passing the Redouble call at this point, and instead wait to see what that 7th card is (once it's dealt) and decide to Redouble or not after that. If a Double, Redouble, or SetDouble is called (including in stage 6 and 8), the players may choose to flip top 1, 2, or 3 cards respectively from the pile of cards numbered 2-5 just as a reminder that the stakes have been raised. The suit or number of the specific cards does not matter since this is only a reminder, and the play continues as usual even if players do not perform this step.

Round Stage 5: Deal the second half of the cards
The dealer deals 4 more cards at a time to each of the players, starting from the player to his or her right side and going counter-clockwise. All remaining 16 cards are dealt in this stage. No additional shuffling/cutting is done at this stage. If Trump by the 7th card was called, the dealer ensures that the call/bid winner will be able to visibly separate the 7th card.

Round Stage 6: Redouble after seeing 7th card
If Trump by the 7th card was called and a Double was called but no Redouble was called, then the player who won the call/bid will have the option to see only the 7th card, and decide whether to call Redouble or Pass. This Redouble can be called only by the player who won the call/bid, and no SetDouble is allowed after that. The player must see only the 7th card, once the last 4 cards will be dealt, and make a decision based on that. If he/she sees more that 5 cards (the 4 cards dealt in the first phase and the 7th card), then he/she forfeits the right to call Redouble, and it's considered a Pass. After making a decision and making the call, he/she can see all 8 cards. The winner of the call/bid must place the 7th card under the pile of unused cards (numbered 2-5). That 7th card cannot be played until it's shown - either by the request of a player to show the Trump Card Suit, or if that card becomes the only option to play. Once it's shown to all, the call/bid winner will take this card in his/her hand, and use one of the unused cards (numbered 2-5) to show the Trump Card Suit for the remaining of the round.

Round Stage 7: Single Hand Call/Bid
Once all 8 cards are dealt, and the calls are final for a Regular round, the players will take turn to call Single Hand, starting from the player who received the first set of cards, and going counter-clockwise. A Single Hand call is where a player claims that he/she will win all 8 tricks/leads without using any help from his/her partner once the round will be played out. The first player to call Single Hand wins the call/bid. If nobody calls Single Hand, the round is played as a Regular round. Note that, a Single Hand call is only allowed if at least one card in hand has the risk of not winning a trick. If all cards are sure to win the trick, the player is not allowed to call Single Hand, and he/she must pass. If Single Hand is called in a round where Trump by the 7th card was used, the 7th card will be taken back in hand, as there is no Trump Card Suit in a Single Hand round.

Round Stage 8: Single Hand Double/Redouble Call If a Single Hand is called, then this Double/Redouble Call stage is needed, otherwise this is skipped. Any player of the oppnent team of the Single Hand call/bid winner can raise the stake of the round by calling Double. That will increase the worth of the round to 6 scores, instead of its regular worth of 3 scores. If a Double call is made, any player of the team of the Single Hand call/bid winner can raise the stake of the round furhter by calling Redouble. That will increase the worth of the round to 12 scores.

Round Stage 9: Regular Leads or Single Hand leads
In a Regular round, the very first lead is given by the person who was dealt the first set of cards. The players then play their hands one by one in each lead, going counter-clockwise. A player must play the suit of the first card played in the lead (lead-suit) as long as he or she has it. If a player doesn't have any card of the lead-suit, he or she can play any other card instead or chose to show the trump card (unless it's already shown). For the lead when a player asks to show the Trump Card Suit, he or she must play a card of that suit (trump card) if he or she has it. The strongest card in the lead-suit wins the lead, unless someone plays a trump card, in which case, the strongest trump card wins. Note that, a card of a Trump Card Suit counts as a trump card only after the Trump Card Suit is shown, and as long as the lead-suit is not the Trump Card Suit. Once the Trump Card Suit is shown, if a player still has K and Q of that suit in hand, he/she is said to have Marriage (also known as Pair) which gives their team a maximum advantage of 4 points. If they are the call/bid winning team, their target is reduced by up to 4 points (minimum target allowed is 16 points). If they are not the call/bid winning team, the target of the call/bid winning team is increased by up to 4 points (maximum target allowed is 28 points). Marriage must be announced right after the Trump Card Suit is shown. The player who played the winning card (won the trick) starts the next lead. The play continues until all 8 leads are done. The team that won the call/bid wins the round if they get at least the amount of points that they are targetting (in absence of Marriage, this is the same as the call/bid they made earlier in the game). Otherwise they lose the round.

Please note that, a Regular round becomes invalid if, for any player, none of the 8 cards in hand has any point. That player must call an Invalid Round after getting all 8 cards and before playing the first lead.
A Regular round can also be invalid if the opponent team for the call/bid winners has no trump card between the two of them. One of them must call an Invalid Round once they realize that this has happened, before the 8th lead is finished.
A Regular round can also be invalid if all 8 leads finish but the Trump Card Suit is not shown.
A Regular round can also be invalid if Trump by the 7th card was used, and if any of the agreed upon invalid scenarios apply. The allowable options are the following 3, the players must choose one of these options before beginning the game.
1. No restriction - play continues no matter what the 7th card is.
2. If the player winning the bid has no card of the Trump Card Suit with points, the round is invalid.
3. If the player winning the bid has only one card of the Trump Card Suit (out of the 8 cards in hand, the 7th card is the only card of that suit) the round is invalid.

In a Single Hand round, the very first lead is given by the player who won the Single Hand call/bid. His/Her partner does not take part in the leads, the rest of the players play their hands one by one in each lead, going counter-clockwise. A player must play the suit of the first card played in the lead (lead-suit) as long as he or she has it. If a player doesn't have any card of the lead-suit, he or she must play any other card instead, as there is no Trump Card Suit in a Single Hand round. After playing the very first card, the winner of the Single Hand call can see his/her partner's card if he/she wishes. The play continues as long as he/she keeps winning the lead/trick, and the round is won by the his/her team if he/she wins all 8 tricks. Even with one lost lead/trick, they lose the round immediately.

Round Stage 10: Updating scores
At the end a round, the team won the call/bid either gets positive score by winning the round, or gets negative score by losing the round. The amount of scores they get is determined by the types of round and call/bid. For a regular round with no Double called, if the team that won the call/bid wins all tricks they get an extra positive score (instead of 1, they get 2 positive scores), if they lose all tricks they get an extra negative score (instead of 1, they get 2 negative scores). In any other case, the score at stake is the same as what was determined in the call/bid phases. The scores from a round are added/subtracted to/from the exising score of the team that won the call/bid, and the new score is shown using the cards numbered 6. The score of each team is kept using C6,D6 and H6,S6 pairs. Each Red symbol represents a net positive score and each Black symbol represents a net negative score. The pair of cards are put on top of each other - face to face - such that only the intended number of symbols of the intended color are visible. At any given time, the score can range from -5 to +5.

For every 6 net positive scores a Red (Winning) set is reached. For every 6 net negative scores a Black (Losing) set is reached. If a set is not reached, then the next round begins by shifting the dealer to the player to the right side of the current dealer (counter-clockwise), and beginning again from Round Stage 1: Deal the first half of the cards. If/Once one or more sets are reached, the game is over. But if the players wish to continue playing, the remaining scores may or may not be reset to 0, depending on what the players agreed upon before the game started. The next round begins by shifting the dealer to the player to the right side of the current dealer (counter-clockwise), and beginning again from Round Stage 1: Deal the first half of the cards.

Miscellaneous Rules (Some covered above):
Round Invalid:
1. If the first player to call/bid has no points in the first four cards. The player must announce Invalid Round and show his/her hand before making any call/bid.
2. If any of the players has no points in eight cards. The player must announce Invalid Round and show his/her hand before playing any card.
3. If any side (the guest team or the host team) has no trump card between the two players. One of the team members must announce Invalid Round once they detect it and before the 8th lead is finished.
4. If 7th card is used as trump, there are three options, one of which the players need to choose from and agree upon before the game starts.
Option 1: No restriction - play continues no matter what the 7th card is.
Option 2: If the player winning the bid has no trump card with points the round is invalid. The player must announce Invalid Round and show his/her hand before playing any card.
Option 3: The third option is that if the player winning the bid has only one trump card (the 7th card is the only card of that suit) the round is invalid. The player must announce Invalid Round and show his/her hand before playing any card.
5. If all 8 leads finish but the trump is not shown (this does not apply to Single Hand round).
6. If one player gets all 4 Jacks (CJ, DJ, SJ, HJ).
7th card show:
If the 7th card is the only card a player has of its suit in his/her hand, and someone plays that suit as the first card of a lead (lead-suit), the player must show the Trump Card Suit (7th card), and then play it. He/She cannot play any other card in that scenario. The same policy applies if the 7th card is the last remaining card in hand. The card must be shown as the Trump Card Suit and then played.
Score reset after a set:
There are two options that the players need to choose from and agree upon before the game starts.
Option 1: The remaining score remains after a set is reached.
Option 2: The remaining score is reset to 0 for both teams after a set is reached.
Redouble with 7th card:
If Trum by the 7th card is used, and a Double is called, the winner team of the call/bid can call Redouble with only four cards in hand, or they can wait till the next cards are dealt. The winner of the call/bid will have a chance to call Redouble after seeing the 7th card, and before seeing the 5th, 6th, and 8th card. In that case, no SetDouble call is allowed.
Single Hand:
Single Hand call is allowed even when a regular Redouble is already called, since Single Hand has the potential to become a higher point call. There must be at least one risk card in hand, otherwise a Single Hand call is not allowed. In a Single Hand play, after playing the very first card, the caller can see his or her partner's hand.
Bonus score:
For a Regular round with no double call, an extra score is allowed (taken) if the winning (losing) team wins (loses) all 8 leads. There is no automatic double even when the bid exceeds 20.
Round ending before 8th lead
If a Round is decided, including showing of trump, bonus score etc., then the round can finish immediately, even if it's not the 8th lead, as long as all 4 players agree.
Maximum score in a lead:
Redouble is allowed for a Single Hand call, making the round worth a score of 12! SetDouble is allowed for a Regular call, making the round worth a score of 6!
Minimum/Maximum Bid and Target
Minimum bid allowed is 16, maximum is 28. Even with Marriage, the final target must remain within this limit.
Forfeit rules:
A team forteits a round if they fail to meet any of the rules or engage in any unsportsman-like conduct - such as looking at someone else's card where it's not allowed, advising partner to play in a certain way, playing a suit that is different from the lead-suit even when a card of that suit exists in hand etc.

Q. Where can I find more information on TwentyNine?
A. Please check our additional FAQ page, where we discuss what makes TwentyNine a fun game, what are some of the common techniques etc.