Dc Riichi Mahjong

PRESENTS

DC Riichi Open 2025

When:

Apr 26, 2025 - Apr 27, 2025

Where:

Hilton Alexandria Old Town

1767 King St, Alexandria, VA 22314

Cost:

$105

Players:

Main Event Registration Cut Off: Friday April 18th 11:59 PM EST

Event Hotel Rates

King: $209/night + tax

Double: $229/night + tax

BOOK YOUR ROOM

Event Hotel Rate Cut Off: April 4th

Transportation

The venue is located across the street from the King St - Old Town Metro stop located on the Blue/Yellow line and the Alexandria, VA (ALX) Amtrak station. Ronald Reagan Washington National Airport is the closest airport with a ~15 minute metro ride, followed by Dulles International Airport (IAD) which is a ~1.5 hours commute via Metro.

Format

5 Round scramble on Saturday. The Top 32 players will advance to Sunday, carrying over 1/3rd of their total points. Top 32 will play 3 more rounds of scramble on Sunday with a final Top 4 cut. Top 4 points will be reset and will play a 2-hanchan set to determine the winner.

Ruleset

WRC ruleset with modifications:
  1. 3.2 -- Nagashi Mangan
  2. 4.1 -- Modified Uma: +24 / +8 / -8 / -24
  3. Floating Uma
  4. 6.3 -- Lower Penalties
  5. Kazoe Yakuman On

  • Stacked Yakuman On
  • No Double Yakuman
  • Aka-Nashi (No red 5s).
  • Hanchans will last 75 minutes with no new hands starting after time's up. (75+0)

Cheating, harassment, and other unsportsmanlike conduct will not be tolerated.

Main Event Schedule

Saturday
Apr 26
Sunday
Apr 27
8:00RegistrationVenue Open8:00
9:00Opening AnnouncementsAnnouncements9:00
9:15Round 1Top 32 Round 19:15
11:00Round 2Top 32 Round 211:00
12:45Lunch BreakTop 32 Round 312:45
2:15Round 3Top 4 Players Announcement2:15
Food Break2:30
4:00Round 4Top 4 Hanchan 13:30
5:45Round 5Top 4 Hanchan 25:00
FreeplayAward Ceremony6:30
FreeplayFreeplay
FreeplayFreeplay
10:30FreeplayTear Down10:30

Tardiness will be penalized.

Day 2 will have a plethora of side events available to all attendees and an on site stream to watch the tournament. Sunday Only pass $25.

Prizes

$750 prize pool for Top 4

The size of the prize pool increases after the Main Event reaches 100, 150, and 200 registered players.

PlacementCurrent100 Players+150 Players+200 Players (cap)
Total$750$1,000$1,250$1,524
1st$300$400$500$599
2nd$200$275$350$425
3rd$150$200$250$325
4th$100$125$150$200

Top 4 players will also receive trophies. All Top 32 players will receive a prize.

Prize wall

ALL games played at the DC Open will reward prize tickets that can be spent on our Prize Wall. A full list of prizes will be posted before the event, but expect to see mahjong stickers, dice, bags, plushies and much more!

Sunday Side Events

The Sunday Runback

  • Same ruleset as the Main Event.
  • 3 Round running in parallel to the Main Event Top 32
  • 9 am start time

SANMA-STYLE

  • 3 player ruleset
  • 3 Rounds 60+0
  • Start time ~30 minutes after the conclusion of the Sunday Runback

On-Demand Friendlies

Any game mode you want to play at any time and earn prize tickets! We will help with coordinating matchmaking. Unique tilesets and rules available for rent:

  • Washizu Mahjong
  • Doman Mahjong (FFXIV Tileset)
  • Saki Cards
  • Cursed Sets (Play if you dare)
  • We are open to other game mode suggestions!

Spectating

We will have a streamed table on Sunday and a designated area in the venue to watch the stream. The link to the stream will be posted here at a later date.

Refunds

Refunds and cancellations will be handled on a case by case basis and subject to a small processing fee.

If you do need to cancel, please let us know as soon as possible by emailing events@dcriichimahjong.com.

Questions?

Hit up any of the staff members on our Discord.

You can also email us at events@dcriichimahjong.com.

Main Event Registration Cut Off: Friday April 18th 11:59 PM EST

Registered Players