The 3rd IRT International Ocaso Apart Andino Chess Open 2026 (3º IRT Abierto Internacional Ocaso Apart Andino) takes place from December 17–20, 2026, at the Ocaso Apart Andino accommodation and recreational complex in Pueblo Andino, Santa Fe Province, Argentina. This four-day international chess event is organized by International Arbiter Nahuel Iván Santianes and is open to competitors seeking FIDE-rated standard chess in an informal resort setting near the Carcarañá River.

The competition features seven rounds under the Swiss system, with 60 minutes per player plus a 30-second increment per move. It is scheduled for international FIDE Standard rating, with Omar Velazquez serving as Tournament Director and International Arbiter Mario Alberto Cena as Chief Arbiter. The official Chess-Results entry shows participants from Argentina and other South American federations, confirming the event’s international character.

The announced cash prize pool is ARS 1,500,000, while the regular tournament entry costs ARS 50,000. An optional ARS 270,000 chess-and-accommodation package includes registration, three nights’ accommodation, breakfast, lunch, dinner, use of the pool and complex facilities, and parking. Payments can be split into two or three installments according to the public tournament notice. The following guide covers playing conditions, prize information, registration contacts, the venue and travel arrangements.

📌 Event Details

⏱️ Time Control & Pairings

Players compete in a single international Open comprising seven Swiss-system rounds. In a Swiss event, pairings are based on players’ developing tournament scores, subject to the applicable color, previous-opponent and pairing restrictions. Participants ordinarily remain in the event after a loss rather than being eliminated. The organizer uses Swiss-Manager for the pairing and results records available on Chess-Results.

The published time control is 60 minutes per player plus 30 seconds after every completed move. The increment is added to the remaining clock following each move, rather than functioning as a delay. This control is classified as Standard on the official tournament results service, so games count for international standard-play rating rather than FIDE Rapid or Blitz.

FIDE Standard Rating

The tournament is listed for international FIDE calculation. Entrants should provide their correct full name and federation identification when contacting the organizers. The Chess-Results starting list already includes FIDE IDs and ratings for registered competitors. A player who needs to clarify their federation eligibility or registration record should contact Nahuel Santianes or Mario Cena before arriving.

Pairings and Player List

Check the official Chess-Results tournament page for the current starting order, registered participants, rankings and subsequent results. The listing provides the competition’s primary administrative reference. A currently listed participant may still need to confirm payment, accommodation or attendance arrangements with the organizer.

Playing-Hall Instructions

The public announcement establishes the chess system and clock but does not give an edition-specific default time, appeals procedure or device policy. Follow the Chief Arbiter’s announcements and the current FIDE Laws of Chess while playing. Do not assume that the bye or late-arrival rules of a previous Ocaso Apart Andino event automatically apply in December 2026.

🏆 Prize Fund

The organizers advertise ARS 1,500,000 in total cash prizes for the third Ocaso Apart Andino International Open. The amount appears prominently in the official Chess-Results tournament description. It is a single-event monetary fund, rather than a separate amount for each rating category or a guaranteed individual first-place award.

Understanding the Announced Prize Total

The ARS 1.5 million announcement confirms the aggregate fund but does not break it down publicly into first, second, third or other placement awards. Therefore, no individual prize amount has been inferred for this listing. Players who are evaluating the financial value of participation should request the current full distribution before paying the entry fee.

Exchange Rates

The official denomination is the Argentine peso. Because exchange rates can move substantially, an unverified or outdated USD equivalent could misrepresent the amount available to winners. The organizer’s ARS amount should be treated as authoritative; international visitors can convert it using the applicable exchange rate when their travel decisions are made.

Prize Conditions

The published entry does not give the final rules for award sharing, tiebreaks, taxes or in-person collection. Competitors should confirm these conditions with the event’s official arbiters rather than assume that the entire stated fund is awarded without restrictions. Specific cash prizes are not the same as the optional accommodation-and-meals package.

♟️ Sections / Groups

The official tournament database lists the 3rd Ocaso Apart Andino as one international Swiss-system Open, not a collection of independent rating-limited events. All registered competitors are included in one starting list, and the seven rounds form one combined competition.

Who Can Enter

The starting list includes internationally rated players and an unrated participant, illustrating that entrants can have different levels of competitive experience. The listed field includes players from Argentina, Venezuela and Uruguay. These are examples from the current entry list, not a guarantee that particular titled players will be present on the first day.

Single Starting List

A competitor does not need to select between Open A or Open B in the available Chess-Results entry. Instead, the organizer administers the starting list as a single Swiss tournament. Any future special prizes for women, juniors, seniors or rating bands would be classifications within the same competition unless the organizer publishes a different structure.

Checking Your Registration

After making contact, ask the organizer to verify the spelling of your name, federation and rating information in the official list. Doing so is especially important for international competitors whose records may be transliterated or whose federation has recently changed.

📅 Schedule

The 2026 Open runs over four consecutive days, December 17–20. The organizer confirms the seven-round format and competition dates in the tournament database. Individual starting times for each of the seven rounds have not been published in the accessible 2026 announcement, so participants should confirm the final program directly before booking travel.

Four-Day Playing Program

Seven classical rounds across four days necessarily require multiple games on at least some days. However, the number of games assigned to a particular date and the precise clock times are not stated in the verified 2026 results listing. The schedule from the second edition in 2025 should not be reproduced as if it were the new tournament’s official timetable.

Arrival and Registration

The opening day is Thursday, December 17. Because participants must arrange their registration and, if using the combined package, room allocation at the complex, arriving earlier in the day or the previous evening may be helpful. Contact the tournament team for the confirmed start time and check-in procedure.

Final-Day Departure

The Open is scheduled to conclude on Sunday, December 20. Players planning a same-day departure should request the final-round and awards schedule from the organizer. The resort is in Pueblo Andino rather than Rosario city center, so the transfer to an airport or long-distance bus terminal must be included in the return plan.

📝 Registration

The tournament notice provides direct telephone contacts for Nahuel Santianes and Mario Alberto Cena, who handle entries and information about the chess-and-lodging package. The standard chess registration is ARS 50,000. The organizers also offer an optional combined package at ARS 270,000, payable in two or three installments according to the public announcement.

How to Register

Contact Nahuel Santianes or Mario Cena using the phone numbers listed by the tournament. Identify the competition as the 3º IRT Abierto Internacional Ocaso Apart Andino, December 17–20, 2026. Give the player’s name, federation and FIDE record, and ask for confirmation of payment instructions and a place in the starting list.

Chess-Only Entry

The ARS 50,000 tournament fee covers the advertised entry to the Open. The notice does not state that the chess-only rate includes accommodation or meals. Participants who will stay elsewhere should ask the organizer about the playing hall check-in and whether any food options are available for tournament visitors.

Combined Registration and Accommodation

The ARS 270,000 package includes registration, three nights’ accommodation, breakfast, lunch and dinner, plus use of the pool, on-site recreation areas and parking. The organizers advertise the possibility of paying in two or three installments. Verify room capacity, check-in date, meal arrangements and payment conditions before committing to the package.

Direct Registration Rather Than a Public Checkout

The 2026 Chess-Results announcement gives direct contacts but does not link to a dedicated public online tournament checkout. Therefore, do not use the hotel’s generic room booking form as a substitute for registering for the chess competition. Obtain explicit confirmation from the tournament team.

🏛️ Organizer

IA IO Nahuel Iván Santianes is listed as the organizer of the 2026 international Open. As an international arbiter and international organizer, he is associated with chess events and tournament administration in Argentina. The official Chess-Results record names Omar Velazquez as Tournament Director and IA OR Mario Alberto Cena as Chief Arbiter.

The tournament’s third edition continues the Ocaso Apart Andino series, offering a seven-round internationally rated championship in a regional resort setting rather than a large city convention center. The local arrangement combines chess, accommodation and meals in one complex, which can simplify travel for participants from other provinces or countries.

For verified tournament-specific information, use the official Chess-Results entry or contact the organizing team by phone. MyChess.Events also maintains an existing Nahuel Iván Santianes organizer profile, which is linked to this event. The accommodation provider is a separate business and should not be confused with the tournament’s chess organizer.

📍 Venue

The tournament takes place at Ocaso Apart Andino, Santa Teresa 288, Pueblo Andino, Santa Fe Province, Argentina. The venue is a combined apart-hotel, recreational property and restaurant offering furnished cabins and apartments, gathering spaces and leisure facilities. Both the 2026 Chess-Results listing and the property’s own website confirm the Santa Teresa address.

The complex describes accommodation in several styles, including Sunny, Sunset, Inti and Apart Duplex units. The property also advertises an on-site restobar, outdoor swimming pool, grills, gym and recreation areas. Its setting outside a major urban center suits players looking for a chess weekend with lodging, meals and activities in one location.

Verified Street Address

The property’s official website and the local municipal tourism directory both identify Santa Teresa 288, Pueblo Andino. The tournament database uses the same address. Travelers should navigate to the named Ocaso Apart Andino property, not merely the center of Pueblo Andino or a similarly named hotel elsewhere in Argentina.

Venue Coordinates

The full postal location is verified. However, an independently validated pair of latitude and longitude coordinates for the exact property entrance was not obtainable from the available public records. The street address is therefore the reliable destination reference; no city-center coordinate should be interpreted as a surveyed point at the chess hall.

On-Site Amenities

The venue website lists a pool, restobar, Wi-Fi, barbecue facilities, gym, guest apartments and event spaces. The combined tournament package explicitly includes access to the pool and recreation areas, as well as parking. Participants should ask the property directly about pool hours, accessibility and accommodation details for the tournament weekend.

🏨 Accommodation

The chess tournament takes place at Ocaso Apart Andino, Santa Teresa 288, Pueblo Andino, Santa Fe. The main accommodation is an optional residential chess package at the venue, rather than an ordinary hotel stay. Independent booking is possible only under the property’s own conditions.

For an independent overnight stay, the links below use 2026-12-16 to 2026-12-21, allowing arrival before the tournament and departure after the final day. Adjust dates and occupancy at booking. Public rates, booking availability, breakfast, local taxes, parking and cancellation conditions may change; always check the property-specific booking terms.

Official all-in-one chess package: The organizers advertise ARS 270,000, combining the chess entry fee, three nights of accommodation, breakfast, lunch, dinner, pool/common-area access and parking. Payment in two or three instalments may be possible by organizer arrangement. The advertised price does not specify whether it is per person or per reservation and does not guarantee a particular room category. Confirm the allocation and terms before paying.

The three-night official stay runs approximately December 17–20. A separate lodging booking at the complex does not automatically include tournament entry or three daily meals. The identifiable Booking.com property page currently does not accept reservations via that platform, so a nonworking Stay22 hotel button has not been added.

Travel and accommodation planning: The venue is in a smaller locality outside Rosario; confirm transport if choosing alternative cabin accommodation. For the official package use the organizer and the venue’s reservation contact, not a general city search.

🚆 How to Get There

Pueblo Andino is a town in Santa Fe Province, Argentina, within the broader Rosario region and the Carcarañá River corridor. The playing complex is at Santa Teresa 288. Most visitors arriving from other Argentine regions will need to plan a final road transfer, even if they reach Rosario by air or long-distance transport.

✈️ Arriving Through Rosario

Rosario’s airport is a regional gateway for passengers flying to the area. International travelers should compare connections via Buenos Aires or other Argentine hubs and verify the available flights on their specific dates. From Rosario, arrange onward road transport to Pueblo Andino rather than assuming the chess venue is within the city.

🚗 By Road from Rosario

For motorists, set the destination to Ocaso Apart Andino, Santa Teresa 288, Pueblo Andino, Santa Fe. The surrounding corridor includes rural roads and routes serving the Carcarañá River communities. Use current navigation information and allow additional time for the final approach, particularly if arriving after dark.

🚌 Coaches and Regional Buses

Travelers arriving at the Rosario long-distance bus terminal can inquire about regional transport toward Pueblo Andino and nearby towns. Service frequency can be limited outside large cities, so check the last onward connection before booking an intercity coach. A prearranged taxi or transfer may be more practical for a group carrying chess equipment and luggage.

🚕 Final Transfer to Santa Teresa 288

The final destination is a rural recreational property rather than a large bus interchange. Participants should confirm pickup, drop-off and parking arrangements with the hotel or tournament contact. The venue publishes a general phone number, +54 3476 51-5036, for accommodation-related enquiries.

Nearby Activities and the Carcarañá River

The venue’s tourism guide describes nearby cycling routes, fishing, horse riding and riverside attractions, as well as restaurants and natural areas. The complex also offers recreational activities on site. Plan leisure activities outside confirmed round times, especially on days when the seven-round Swiss event schedules more than one game.

Travel on the Closing Day

The final competition date is December 20. Until the 2026 round timetable is confirmed, avoid booking a departure that requires leaving Pueblo Andino early on Sunday. Include the road transfer back to Rosario or another transport hub when calculating your return itinerary.

ℹ️ Other Information

♟️ Third Edition of the Ocaso Apart Andino Open

The 2026 tournament is the third edition of the international chess Open held at Ocaso Apart Andino. The event’s public record demonstrates an ongoing series and confirms FIDE Standard evaluation in the upcoming edition. Earlier events had different prices, time controls and schedules, so their arrangements should not be silently reused for the December 2026 tournament.

💰 Cash Prizes and Combined Package

The ARS 1.5 million figure refers to the cash prize fund. The ARS 270,000 sum is a separate fee covering entry, a three-night stay, meals and amenities. Players should not confuse the two, especially when comparing tournament costs with potential prize awards.

♟️ International Participation

The Chess-Results starting list includes players from Argentina as well as other South American federations. The event offers a FIDE-rated opportunity in Santa Fe Province without requiring participants to attend a multi-week festival. However, entry eligibility and any international player arrangements must be confirmed with the organizers.

📋 Tournament Updates and Contact

Swiss-Manager maintains the registered participant list, with the final rankings and results expected on Chess-Results. The event notice gives two specific chess contacts, Nahuel Santianes and Mario Cena. The hotel operates separate accommodation and restaurant enquiries, so contact the appropriate party for chess questions versus room availability.

🔗 Useful Official Links