The WCA Guidelines supplement the WCA Regulations. Please see the Regulations for more information about the WCA.
Guidelines are numbered in correspondence with related regulations. Note that multiple Guidelines may correspond to the same Regulation, and some Guidelines correspond to Regulations that do not exist anymore.
To be more informative, each Guideline is classified using one of the following labels. Note that this should be treated as metadata, not as a description of importance.
- ADDITION Additional information to supplement the Regulations.
- CLARIFICATION Information to address any possible questions about interpretation of the Regulations.
- EXPLANATION Information that clarifies the intent of Regulations.
- RECOMMENDATION Something that is not strictly mandatory, but that should be done if possible.
- REMINDER Information that may be addressed other Regulations/Guideline, but whose relevance is worth reiterating.
- EXAMPLE An example of how to apply a Regulation.
- 1c3+) RECOMMENDATION Results should be ready at the end of the last day of competition.
- 1c3++) ADDITION Physical records (e.g. score sheets, written solutions from Fewest Moves Solving) must be retained for a minimum of one month. Digital records (e.g. scramble sequences, results) must be retained permanently.
- 1c3b+) CLARIFICATION If there are multiple groups, it is not necessary to identify which competitor was in which groups.
- 1c4+) RECOMMENDATION Corrections to the results should be available within one week of the competition date.
- 1c10+) CLARIFICATION It is sufficient to ensure access to a digital copy of the Regulations.
- 1h+) RECOMMENDATION Competitors in the same group should use the same scramble sequences. Different groups should use different scramble sequences.
- 1h++) RECOMMENDATION All attempts in the final round of an event, as well as all Fewest Moves Solving attempts, should have the same scrambles for all competitors (i.e. only 1 group).
- 1h1+) CLARIFICATION Scramblers/judges should only scramble for/judge other competitors in the same group only if it is important for competition logistics.
- 2c+) ADDITION First-time competitors should register using their legal name. They may register using a reasonable nickname, at the discretion of the WCA Delegate.
- 2c++) ADDITION Competitors must not provide intentionally misleading information, and returning competitors should provide information consistent with past information (e.g. exact name and WCA ID).
- 2d+) ADDITION Date of birth and contact information should be especially secured.
- 2d++) RECOMMENDATION If a third party (e.g. journalist) asks the organisation team to be put in contact with any competitor(s), the competitor(s) should first be asked for consent.
- 2h+) CLARIFICATION Competitors may be barefoot for Solving With Feet.
- 2j2+) EXAMPLE For example, if a competitor is disqualified from an event for failing to show up for the final round, their results from earlier rounds remain valid.
- 2s+) REMINDER Special accommodations must be noted in the Delegate Report.
- 3a+) CLARIFICATION Competitors may use puzzles of any reasonable size, at the discretion of the WCA Delegate.
- 3a++) ADDITION By default, a competitor should use the same puzzle for consecutive attempts in a speed solving round. A competitor may switch puzzles between attempts, at the discretion of the judge or WCA Delegate.
- 3a+++) CLARIFICATION Competitors may borrow puzzles from other competitors privately, to use in competition.
- 3a1+) CLARIFICATION Competitors may be disqualified if they do not have a puzzle ready to submit soon after they are called (e.g. if they planned to use a puzzle that another competitor is currently using, and therefore cannot submit a puzzle at the moment).
- 3d1b+) CLARIFICATION Patterns do not need to be present on every face, but only on faces where a distinct colour cannot be found. Pieces must not have any feature (e.g. textures, pattern irregularities) that significantly distinguishes them from similar pieces.
- 3h+) CLARIFICATION Puzzles may be refined internally by sanding or lubricating.
- 3h++) EXAMPLE Examples of enhancements include: new moves are possible, normal moves are impossible, more pieces or faces are visible, colours on the backside of the puzzle are visible, moves are done automatically, or the puzzles has more/different solved states.
- 3h2+) CLARIFICATION In the past, "stickerless" puzzles were not allowed. Such puzzles are now allowed.
- 3h2++) CLARIFICATION "Stickerless" puzzles that significantly differ from most mass-produced "stickerless" puzzles are only permitted at the discretion of the WCA Delegate.
- 3j+) REMINDER In the past, engraved/embossed parts have been allowed. This is no longer permitted.
- 3j2+) CLARIFICATION On Clock, all eighteen inner clock faces are considered similar pieces.
- 3l+) ADDITION Logos may feature any reasonable design that does not give a conspicuous advantage (e.g. encoding information that could be used to cheat), and leave the coloured part clearly recognisable. Unconventional logos are only permitted at the discretion of the WCA Delegate.
- 4b1+) REMINDER The WCA Delegate must never re-generate any scrambles to replace other ones for the purpose of filtering. For example, it is not be permitted to glance at the scrambles for a competition and generate the entire set again in order to generate "fairer" scrambles.
- 4b2+) CLARIFICATION In general, all official scramble sequences should be kept secret during the competition and published together after the end of the competition (see Regulation 1c3a). In some cases (e.g. world records), the organisation team may wish to release specific scrambles sooner after the end of a round.
- 4b4+) ADDITION It is permitted for the puzzle to change its orientation when it is moved from the scrambler to the solving station, as long as no one is attempting to influence the randomness of the orientation (see Regulation A2e1).
- 4d+) CLARIFICATION Some puzzles use standard colour schemes, except that white is replaced with black. In this case, black is the darkest colour and must not be treated as white.
- 4f+) RECOMMENDATION The WCA Delegate should generate sufficient scrambles for the entire competition ahead of time, including spare scrambles for extra attempts.
- 4f++) REMINDER If the WCA Delegate generates any additional scrambles during the competition, the scrambles must be saved (see Regulation 1c3a).
- 5b5+) EXAMPLE Examples of parts physically detached, resulting in a solved state: one 3x3x3 center cap, one big cube center piece, an inner piece of a big cube.
- 5b5++) EXAMPLE Examples of parts physically detached, resulting in a "DNF": two 3x3x3 center caps, two big cube center pieces, a 3x3x3 edge piece, a 4x4x4 edge piece ("wing"), any combination of two pieces that both have coloured parts.
- 5b5+++) EXAMPLE Example of parts not fully attached, resulting in a solved state: a 5x5x5 centre piece twisted in its spot.
- 5b5++++) EXAMPLE Example of parts physically attached but not fully placed, resulting in a "DNF": a 3x3x3 edge piece slightly popped out.
- 5c+) REMINDER If a competitor has a puzzle defect, this does not give them the right to an extra attempt.
Article 6: Awards/prizes/honours
- 6a+) ADDITION Awards, prizes or honours may be given to competitors according to the announcement of the competition.
- 6b+) RECOMMENDATION Competitors should attend the winner's ceremony to receive awards/prizes/honours.
- 6b1+) RECOMMENDATION The winner's ceremony should be held in the competition venue, within one hour after the end of the last event.
- 6c+) RECOMMENDATION Winners of awards, prizes or honours should be prepared to talk to journalists or any media covering the competition.
- 6d+) RECOMMENDATION Organisation teams of competitions should have certificates for all category winners, signed by the leader of the organisation team and by the WCA Delegate.
- 7d+) ADDITION The temperature of the competition area should be 21 to 25 degrees Celsius.
- 7h2+) ADDITION The competitors in the competitors area should not be able to see the puzzles of the competitors on stage.
- 8a4+) RECOMMENDATION Changes to increase the maximum number of competitors in the first round should be made at least one month before the competition (see Regulation 9r3).
- 8a4++) RECOMMENDATION The competition should be announced at least one month before the beginning of the competition.
- 8a5+) RECOMMENDATION The competition should have at least 12 competitors.
- 8a7+) ADDITION Organisers should strongly consider modifications to make Stackmat timers more robust against common incidents, such as making the buttons more difficult to press by accident (e.g. by attaching O-rings around the buttons) and securing the battery more firmly (e.g. by padding the battery compartment).
- 9b+) ADDITION The preferred format for the final of an event is "Average of 5" or "Mean of 3", if possible.
- 9b++) ADDITION Events other than those specified in Regulation 9b may be held during a competition, but will be considered unofficial and therefore will not be included in the official results of the competition.
- 9b3b+) CLARIFICATION The "Mean of 3" statistic does not affect the competitor's ranking in a "Best of 3" round (which is based on the best result). The WCA recognises it outside of the competition format.
- 9f1+) EXAMPLE If the timer displays 12.678 for an attempt, the original recorded time is 12.67 (drop any digit after a hundredth of a second). A judge may write the full-precision time on the score sheet (and keep the precision in the calculation of penalties), as long as the score taker truncates it for the official results.
- 9f4+) EXPLANATION The result of an attempt is DNF only if the competitor began the attempt by indicating that they are ready (see Regulation A3b2) but the attempt was disqualified.
- 9f5+) CLARIFICATION The result for an attempt is DNS if the competitor was eligible for the attempt and did not begin it (see Regulation A3b2). If the competitor did not qualify for an attempt (e.g. in a combined round), they have no result for the attempt.
- 9q+) RECOMMENDATION Events and rounds should have at least 2 competitors.
- 10f+) EXPLANATION The misalignment limits are selected so that they provide a natural cutoff between one state of a puzzle (without penalty) and a state one move away.
- 11e+) CLARIFICATION Since an appeal is not guaranteed to be successful, the competitor may choose to keep the timer running while appealing it, and resume the attempt when appropriate.
- 11e1+) REMINDER The extra attempt must be scrambled using an unmodified scramble sequence generated by an official scramble program (see Regulation 4f, Guideline 4f+).
- 11e2+) ADDITION If an extra attempt itself leads to an additional extra attempt, the competitor should keep doing extra attempts until there are enough to replace as many regularly numbered attempts as needed. The valid extra attempts replace the relevant regularly numbered attempts in increasing order.
- 11e2++) EXAMPLE Suppose a competitor has 5 regularly numbered attempts, and #2 and #4 lead to extra attempts. After finishing the 5 regularly numbered attempts, the competitor continues with extra attempts until there are two valid extra attempts. The first of these replaces attempt #2, and the other one replaces attempt #4.
- 12c2+) ADDITION When counting the moves in case of a misalignment at the end of a solve, x and y are considered separately. Example: (5, 1) is considered one misalignment, (5, 5) is considered two misalignments.
- A1a2+) ADDITION In case of a cumulative time limit, the judge records the original recorded time for a DNF on the score sheet in parentheses, e.g. "DNF (1:02.27)".
- A1a3+) REMINDER The organisation team and the WCA Delegate must be mindful that time limits influence the strategies of the competitors (e.g. rushing the first two attempts in hopes of meeting a cutoff in a combined round), and that changing time limits after the beginning of the round can disadvantage some competitors unfairly.
- A1a4+) REMINDER If a competitor has accidentally been permitted to exceed the time limit, the time limit must be enforced retroactively, and the judge, competitor, and WCA Delegate should be informed (see Regulation 1g2). Judges must always be aware of the time limit for a current attempt (which might depend on previous attempts, in the case of a cumulative time limit).
- A1c+) CLARIFICATION WCA delegates should only use their discretion to prevent competitors from being a severe detriment to the competition (e.g. wasting time and/or competition resources). Competitors should not be disqualified for a "poor" result when they are competing to the best of their abilities.
- A2c1+) REMINDER In the past, score sheets have been used to cover puzzles while leaving some sides exposed. This is no longer permitted.
- A3c3+) CLARIFICATION The competitor may reset the timer before/during the inspection phase if the judge accidentally neglected to do so. However, it is the responsibility of the judge to make sure the timer has been reset (see Regulation A3b). If the competitor accidentally tries to begin the solve with a timer that the judge did not reset (i.e. the competitor performs inspection, places hands on the timer for a reasonable length of time, assumes that the timer will start normally, and begins to manipulate the puzzle), the attempt should be replaced by an extra attempt, at the discretion of the WCA Delegate.
- A3c4+) CLARIFICATION If the use of a thin object inside the puzzle has been enforced, the judge must not remove the object on behalf of the competitor.
- A6b+) EXPLANATION The arbitrary value of 0.06 seconds was chosen to accommodate concerns about Stackmat timer malfunctions.
- A6f+) CLARIFICATION If the competitor resets the timer before the result was completely recorded, the judge must not write down the result from memory or from video or photographic evidence, and must disqualify the attempt instead (DNF).
- A6g+) ADDITION While the judge is determining whether to assign a penalty for misalignment, they should not touch the puzzle.
- A7c+) ADDITION If a result signed by a competitor is found to be incomplete or unreadable, it should be interpreted the worst reasonable way (e.g. "1:05" will be considered 1:05.99, "25.X3" will be considered 25.73 if X could be either a 1 or a 7). Given that the Stackmat timer displays a time of X:0Y.ss as X:Y.ss, a missing tens digit should be considered more likely than a missing ones digit (e.g. "1:2.27" will be considered 1:02.27). The judge who signed an ambiguous result may be requested to clarify it, at the discretion of the score taker.
- A7g+) EXAMPLE Examples of incidents that could award a new competitor an extra attempt: not waiting for the green light, improperly starting or stopping the timer, going over inspection time due to misunderstanding how to start an attempt, or other procedural time penalties.
- A7g++) CLARIFICATION Individual penalties cannot be waived for new competitors. A full extra attempt must be given.
- A7g+++) RECOMMENDATION The WCA Delegate should use stronger discretion when awarding more than one extra attempt to the same new competitor. If more than one extra attempt is awarded, it should be for a different incident.
Article B: Blindfolded Solving
- B1+) REMINDER The competitor must use a puzzle without textures, markings, or other features that distinguish similar pieces (see Regulation 3k). This should be given special attention for Blindfolded Solving.
- B1b+) RECOMMENDATION Blindfolds should be checked by the WCA Delegate before use in the competition.
Article C: One-Handed Solving
- C1b+) CLARIFICATION The competitor may use both hands during inspection.
- C1b++) CLARIFICATION The competitor is not required to use the same solving hand for different attempts of the same round.
- C1b+++) REMINDER Use of the surface is permitted while solving or repairing the puzzle.
Article D: Solving With Feet
- D1b+) CLARIFICATION The competitor may wear socks while solving.
- D1c+) REMINDER While repairing puzzle defects, other body parts must not touch the puzzle.
Article E: Fewest Moves Solving
- E2b+) CLARIFICATION A competitor may choose to stop an attempt early by handing in a solution before the time limit.
- E2c+) CLARIFICATION Although the judge may provide a standard sheet for competitors to submit solutions, a competitor may submit a solution on a different piece of paper, as long as a single move sequence is unambiguously indicated as the submitted solution. (Note that the piece of paper must come from the judge, according to Regulation E3a.)
- E2c++) CLARIFICATION The competitor's solution must only use moves that are exactly defined in Regulation 12a. Examples of notation and moves that are not permitted in competition: [F], [R, U], [R: U], R'2, L'w, f, M, U2'.
- E3b+) REMINDER "Rubik's Cube" refers only to the standard 3x3x3 puzzle.
- E3d+) CLARIFICATION Any stopwatch or watch used by a competitor must not appear to have any functions that would help the competitor find a solution.
- E3d++) CLARIFICATION Competitors should not consider a personal stopwatch or watch as the official time, and must submit their solution after the judge calls "STOP".
Article H: Multiple Blindfolded Solving
- H1b1+) REMINDER The attempt is not disqualified for reaching the time limit, due to exceptions for Multiple Blindfolded Solving (see Regulation A1a4 and Regulation A1a5).
- H1b1++) ADDITION The judge may permit the competitor to continue the attempt unofficially, but the attempt must be stopped and judged first, in full accordance with the Regulations.
- H1d+) EXAMPLE Example: Suppose a competitor attempts 10 cubes, stops the solve with a time of 59:57, and has two time penalties. The final result is 59:57 + 2*2 = 60:01 (also see Regulation A1a5).
- H1d++) EXAMPLE Example: Suppose a competitor attempts 10 cubes, the judge stops the competitor at 60 minutes, and the attempt has two time penalties. The final result is 60:00 + 2*2 = 60:04.