USA's round 9 opponents at the Chess Olympiad: how Uzbekistan and Canada play

Short answer

In round 9 of the 46th Chess Olympiad, on 25 September 2026, the USA meet Uzbekistan in the open section on board 1, and Canada in the women's event on board 9. Based on 465 over-the-board classical games broadcast on Lichess over the last three years, this dossier dissects the chess opening repertoire of both squads, the theoretical variations where opponents score below their customary levels, the phases of play where the engine detects technical inaccuracies, and the complementary indicators provided by online records. Every statistical return is accompanied by its underlying sample size, providing an essential measure of statistical reliability.

Event: 46th FIDE Chess Olympiad

How this was compiled: Checked on 24 September 2026, with round 8 finished and round 9 still to be played: it starts on 25 September at 3 pm Samarkand time (10:00 UTC). The pairings, the standings and the individual Olympiad scores were checked on chess-results. The official PGN with the line-ups only appears when the round starts, so this dossier covers both opponents' full squads rather than the four boards. The repertoire uses the 465 over-the-board classical games from the last three years broadcast on Lichess, matched to each player by FIDE ID: 256 from the Uzbek squad and 209 from the Canadian one. The error profile measures each player's 12 most recent games with Stockfish 19 at depth 16. Every move quoted in the text was re-measured at depth 24, with a dedicated search and a clean hash, and endgames with up to seven pieces were checked against the Lichess tablebase. The blitz and rapid repertoire comes from verified Chess.com accounts, over a 90-day window; correspondence games are excluded.

The essentials in a few lines

• In round 9, on 25 September 2026, the USA meet Uzbekistan in the open section (board 1) and Canada in the women's event (board 9). In the open tournament, Uzbekistan lead the field on 14 match points, one ahead of the Americans, who hold a 33-point edge in average rating. In the women's event, the USA maintain a 230-point rating advantage, though Canada sit ahead in the tournament standings. Because confirmed board pairings appear only upon publication of the round's starting PGN, this dossier evaluates all ten squad members.
• Javokhir Sindarov suffered defeat in only 2 of the 41 classical games in the database and stands as the most precise player in the match under engine measurement. At this Olympiad, he has scored 5.5 points from 7 games, registering a 2864 tournament performance. Handling Black against 1.e4 e5 2.Nf3 Nc6, he drew all 5 games.
• The most definitive statistical vulnerability in the Uzbek squad belongs to Mukhiddin Madaminov: with Black against 1.e4, he recorded a modest 38.2% across 17 games, dropping to 28.6% in 7 encounters against the Italian Game without registering a win. At the 2026 UzChess Cup, he held a winning position against Hans Niemann before technical inaccuracies allowed a draw.
• Maili-Jade Ouellet deploys 1.d4 as her invariable opening move across all 41 White games in the sample; against 1...Nf6 2.c4 e6, her scoring rate declines to 40.6% in 16 games. With Black, she achieves an exceptional 73.8% in 21 encounters against 1.e4, winning all 7 Sicilian Defence games, whereas facing 1.d4 her return plummets to 30.0% over 10 games.
• Nodirbek Yakubboev, holding 5.5 points from 7 games at the Olympiad, has shown susceptibility to premature time trouble (zeitnot). In round 8 against Frederik Svane, he committed 23...Be6 with only 2 minutes 52 seconds on the clock, causing the evaluation to jump from +1.19 to a decisive +6.71 for White, culminating in defeat.

The round 9 picture

The board 1 showdown in the open section represents the premier encounter of this Olympiad to date. Defending champions Uzbekistan, spurred by enthusiastic home crowds, lead the tournament on 14 match points and 23.5 game points following a 3-1 victory over Germany in round 8. The USA occupy second place on 13 match points and 22.5 game points after edging Serbia 2.5-1.5, in a contest where Fabiano Caruana overcame Alexey Sarana on top board. In head-to-head terms, the Americans hold a modest advantage in average rating (2730 against 2697), but face an Uzbek lineup that remains undefeated across all team matches.

In the women's event, the standings and average ratings tell divergent stories. The USA entered as the fifth seeds with an average rating of 2415, while Canada were seeded 38th at 2185. Despite that theoretical deficit, the Canadian squad holds 15th place on 12 match points and 23 game points, sitting ahead of the USA, who occupy 18th place on 11 match points and 22.5 game points. The Americans have conceded defeats to India (1-3) and Armenia (1.5-2.5), while drawing against Uzbekistan. The Canadians have remained unbeaten since round 3 against Serbia, arriving off an impressive 3-1 victory over Spain.

The table below details the sample volume examined for each player in classical chess. The Uzbek delegation accounts for 256 games in the database and the Canadian squad for 209. The largest datasets belong to Maili-Jade Ouellet (81 games) and Shamsiddin Vokhidov (75). The most compact individual sample is Hanxi Jiang's with 9 games, representing the only player in the match below the 10-game threshold where the dossier applies a low-confidence classification. All evaluations regarding her play must be assessed with this caveat in mind.

At the Olympiad, Uzbekistan's top two boards have operated with formidable tactical sharpness. Nodirbek Abdusattorov has posted 6 points from 8 games, highlighted by a victory over Ding Liren in round 7 and a 2836 performance. Javokhir Sindarov and Nodirbek Yakubboev have each scored 5.5 from 7, recording performances of 2864 and 2779 respectively. Shamsiddin Vokhidov has collected 4 points from 6 games, and reserve Mukhiddin Madaminov has contributed 3 from 4. For Canada, Maili-Jade Ouellet paces the squad with 6.5 from 8 and a 2415 performance, outperforming her rating by 155 points. Oksana Golubeva has scored 5 from 6, Yunshan Li holds 5 from 7, Svitlana Demchenko has 4.5 from 7, and Hanxi Jiang has contributed 2 from 4.

Uzbekistan: Sindarov's impenetrable solidity and vulnerabilities in the reserve's Black repertoire

In the open match, Javokhir Sindarov represents the most unyielding opponent on the Uzbek roster. Over 41 games, he has succumbed to defeat only twice: once with White and once with Black. With White, he employs 1.d4 in 11 of 20 games and remains unbeaten (72.7%); with 1.e4, he scored 62.5% in 8 games, reaching his lowest return in 1.e4 e5 2.Nf3 Nc6 at 50.0% in 4 games. With Black, he meets 1.e4 with 1...e5 in 6 of 8 games and lost none of the 8, although he rarely forces decisive outcomes: following 2.Nf3 Nc6, he registered 5 draws in 5 encounters. Against 1.d4 he adopts a more combative approach, scoring 65.0% in 10 games, choosing the Queen's Gambit Declined in 6 of them. An opponent seeking to neutralize the position and secure a draw with White has a clear theoretical blueprint; conversely, anyone aiming to unbalance the game for a win will find no easy concessions in his chess opening repertoire.

Nodirbek Abdusattorov displays the greatest technical versatility in the Uzbek squad with White: he scores 65.4% across 26 games, suffering an isolated loss. Opening with 1.e4, he achieved 69.2% in 13 games without defeat, while posting 70.0% in 5 games initiated with 1.c4. His scoring is most effectively held in check when playing 1.d4 against 1...Nf6 2.c4 e6, where he settled at 50.0% over 7 games (one win, five draws, and one loss). With Black, the disparity in his returns between the two primary opening moves provides valuable insight: against 1.e4, he maintains an undefeated 64.3% in 14 games, alternating between the Sicilian with 2...d6 (6 games) and 1...e5 (5 games); against 1.d4, his score drops to 44.4% across 9 games, incurring two losses in a line evaluated with medium confidence.

Nodirbek Yakubboev possesses the smallest classical dataset in the squad (33 games) and the most fluid repertoire. With White, he divides his choices between 1.e4 (9 games, 61.1%) and 1.d4 (8 games, 50.0%). When he opens 1.e4, the Sicilian Defence has restrained his winning chances, yielding 5 draws in 5 games, in contrast to two wins from three games against 1...e5. With Black, he answers 1.d4 invariably with 1...Nf6 2.c4 e6, scoring 57.1% in 7 games (three wins and two losses). Against 1.e4, he deploys the Sicilian in 5 of 6 games, scoring 50.0%. His critical competitive factor, however, lies not in his choice of chess opening, but in his clock management, an aspect explored in the engine analysis.

Shamsiddin Vokhidov is the most predictable starter with White, choosing 1.e4 in all 39 games in the sample for a 60.3% return. Facing 1...e5, he achieved 61.4% across 22 encounters, dropping to 54.5% in 11 games against the Sicilian Defence: 50.0% in 6 games after 2.Nf3 d6 and 4 draws in 4 games after 2...Nc6. With Black against 1.d4, he answers exclusively with 1...Nf6, scoring 50.0% in 22 games; his principal vulnerability appears in the sequence 1.d4 Nf6 2.c4 e6 3.Nf3, where he scored 40.0% in 10 games (two wins, four draws, and four losses). Against 1.e4, he performs considerably better in the Sicilian (80.0% in 5 games) than in open games with 1...e5 (40.0% in 5 games without a win).

Mukhiddin Madaminov serves as the reserve and exhibits the most statistically definitive metrics in the Uzbek squad. With White, he demonstrates strict loyalty to 1.e4 across all 27 games (59.3%), reaching 68.2% in 11 encounters against 1...e5. With Black, his overall return is held to 42.6% in 27 games, dropping sharply to 38.2% in 17 games against 1.e4 (two wins, nine draws, and six losses), a metric evaluated with high statistical confidence. Madaminov replies 1...e5 in 15 of those 17 games, struggling in particular against the Italian Game with 3.Bc4, where he managed 28.6% in 7 games without a win. Against 1.d4, he scored 41.7% in 6 games. At this Olympiad, he has featured in 4 of the 8 rounds.

Canada: Ouellet relies on 1.d4 with White and exploits the opponent's 1.e4

Maili-Jade Ouellet occupies the top board and stands as the in-form player of this Olympiad, holding 6.5 points from 8 games. With White, she initiates with 1.d4 without exception, compiling a 58.5% return over 41 games. Her scoring efficacy depends heavily on the opponent's defensive structure: against 1...d5 she recorded an imposing 85.0% over 10 games without defeat, rising to 91.7% in 6 games against the King's Indian Defence (2...g6). Conversely, facing 1...Nf6 2.c4 e6, her performance undergoes a sharp contraction to 40.6% across 16 games (five wins, three draws, and eight losses), a metric established with high confidence that constitutes the key tactical finding for the women's match.

Handling Black, Ouellet presents two opposing analytical profiles. Facing 1.e4, she achieves an outstanding 73.8% in 21 games, deploying the Sicilian Defence in 7 instances with a 100% win rate (7 victories) and securing 62.5% in the remaining 12 games with 1...e5. In stark contrast, against 1.d4 her return collapses to 30.0% in 10 games (one win and five losses), deteriorating to 21.4% across 7 encounters when entering 1...Nf6 2.c4 e6 without a single win. Against 1.c4, she conceded 4 defeats in 5 games. The sample volume clearly indicates that, with Black, Ouellet excels against 1.e4 but remains vulnerable against queen's pawn setups. Notably, her median rating in the sample is 2317, higher than her current 2260, indicating that much of this performance was achieved against stronger opposition.

Yunshan Li provides the Canadian squad's most dependable scoring with White: 70.8% across 24 games, suffering only two defeats. She opens 1.d4 in 19 games (71.1%), scoring an impressive 81.3% in 8 encounters against 1...Nf6 2.c4 e6. With Black, she registers 57.7% in 26 games, though incurring nine losses in keeping with an aggressive, decisive style that produced only four draws. Against 1.e4 she scored 57.1% over 14 games, encountering her main vulnerability in the Sicilian with 2.Nf3 e6, where she managed one win and four losses in 5 games (20.0%). Against 1.d4 she replies invariably with 1...d5, scoring 56.3% in 8 games.

Svitlana Demchenko divides her opening moves with White between 1.d4 (65.4% in 13 games) and 1.e4 (63.6% in 11). Against the Open Sicilian with 2.Nf3 she achieved 90.0% in 5 games, whereas against the Alapin Variation with 2.c3 she dropped to 16.7% in 3. With Black against 1.e4, she holds 58.3% across 12 games, playing the Sicilian in 6 of them. Against 1.d4, however, she has lost all 4 games in the database. While four games cannot establish definitive conclusions and the dossier classifies the subset as low confidence, it remains the only unblemished loss record in the match.

Oksana Golubeva maintains a 75.0% return with White across 12 games, winning 6 of 7 games initiated with 1.d4. With Black, she achieves 53.6% over 14 games, with her lowest return appearing in the Queen's Gambit Declined at 40.0% in 5 games, within an overall 42.9% across 7 games against 1.d4. Facing 1.e4, she plays the French Defence, scoring 62.5% in 4 games. Hanxi Jiang has 9 games in the classical database (3 with White and 6 with Black), winning 3; against 1.e4 she employs the Caro-Kann Defence, with one win in 3 games — a dataset too narrow for rigorous repertoire analysis.

Where the engine finds the errors

The table below details the average evaluation loss per move across each phase of play, alongside the volume of moves analysed in brackets. In the opening moves, the Uzbek grandmasters exhibit world-class precision, losing merely 4 to 6 centipawns. The Canadian women maintain disciplined play in the opening phase as well, clustered between 7 and 10 centipawns. Distinct calculation disparities emerge in the middlegame: the Uzbeks range from 13 (Sindarov) to 23 centipawns (Vokhidov), whereas the Canadian squad spans from 21 (Li) to 60 centipawns (Jiang). The middlegame phase clearly offers the American women's team their most promising tactical opportunities.

The most severe zeitnot collapse of the match befell Nodirbek Yakubboev in round 8 against German grandmaster Frederik Svane. Yakubboev played 19...Rfb8 with 8 minutes 37 seconds on his clock under dead equality (−0.09). On move 23, pressed by 2 minutes 52 seconds, he committed 23...Be6, when 23...Bxd4 preserved a viable defence at +1.19, allowing the evaluation to surge to +6.71 for Svane. Four moves later came the decisive blunder 27...Rxb3 with 28 seconds left, sending the evaluation to +12.24 and compelling resignation. A 2686-rated grandmaster reduced to under three minutes by move 23 illustrates a practical vulnerability in time management that opening statistics cannot capture.

Another notable Uzbek instance of time trouble involved Mukhiddin Madaminov in round 9 of the 2026 UzChess Cup against Hans Niemann. Handling the White pieces, Madaminov held a winning +4.36 advantage with 2 minutes 12 seconds on his clock at move 40; his choice of 40.Kh3 permitted 40...Qe1, causing the evaluation to collapse to +0.49 and allowing Niemann to draw. In round 5 of the Olympiad against Vietnam, Madaminov played 35.bxc4 with 1 minute 57 seconds remaining, reducing his advantage from +1.65 to +0.42 against Banh Gia Huy (2419), though he ultimately recovered to secure the win.

Nodirbek Abdusattorov accounts for the largest individual algorithmic deduction in the Uzbek sample, though without time pressure. In round 2 of the 2026 Prague Masters against Mateusz Bartel, he played 29.Qxa7 with 22 minutes remaining from a winning +5.81 position. The engine identifies 29.Ne6 as the clinical continuation, with the capture compressing the advantage to +0.89 before he converted on move 58. In round 4 of this Olympiad against China's Yu Yangyi, 34.g4 with 25 minutes left reduced the evaluation from +1.84 to +0.22, leading to a draw.

Shamsiddin Vokhidov maintains an impeccably clean endgame profile (14 centipawns per move), with his only notable evaluation dip occurring with White against Armenia's Haik Martirosyan in round 8 of the 2025 World Rapid Championship: 42.Rxf7 with 2 minutes 18 seconds on the clock transformed a +3.22 advantage into level equality at −0.15, allowing Martirosyan to secure the draw.

Canada under clock pressure and the nuances of engine evaluation

Svitlana Demchenko's round 7 encounter against Davaademberel Nomin-Erdene of Hungary epitomizes the dramatic swings of reciprocal zeitnot. With 2 minutes remaining in an equal position (+0.66), she played 38...Qf1, whereas 38...Qxe4 preserved the balance, allowing the evaluation to reach +6.53. Her opponent, pressed with 39 seconds, countered with the erroneous 39.Rxa7 instead of 39.Bc2, restoring balance to 0.00. Then followed 39...Re2, elevating the evaluation once more to +4.54; granted a third opportunity, Nomin-Erdene converted clinical accuracy. Demchenko's 36-centipawn average in the endgame also incorporates algorithmic distortions, as two of her largest losses occurred in mathematically lost positions against Elif Mehmed in round 3 and in the conclusion of this same contest.

Yunshan Li presents the cleanest technical profile in the Canadian squad, with her costliest inaccuracies occurring with abundant time on her clock. In round 9 of the 2026 Canadian Championship against Demchenko, she played 16...Qc6 with 22 minutes 52 seconds remaining, when 16...Re8 limited White's edge to +1.84, sending the evaluation to +6.28 and resulting in defeat. In round 4 of this Olympiad against Bolivia's Gloria Luz Yepez Montenegro, she played 25.dxc5 with 15 minutes 39 seconds left, when 25.Qa4 held the position at −1.10, causing the evaluation to fall to −4.71 before she salvaged a draw.

Oksana Golubeva has accumulated 13 serious middlegame inaccuracies, trailing only Jiang in the squad, yet has compiled an impressive 5 points from 6 games at the Olympiad thanks to unexploited opportunities by opponents. In round 3 against Serbia's Jovana Srdanovic, she played 44...Be5 with 32 minutes remaining when 44...Nf6 preserved equality at +0.28, allowing the evaluation to surge to +6.74; Srdanovic missed the winning continuation, and the game ended in a draw. In round 4 against Bolivia's Jessica Molina, holding a decisive −7.54 advantage, she played 25...Bf6 when 25...Rf6+ maintained total control, returning the position to −0.07 before she ultimately triumphed amid her opponent's acute clock collapse.

Hanxi Jiang records the highest middlegame error rate in the match, averaging 60 centipawns over 9 games. In round 4 against Bolivia's Daniela Cordero, holding a +3.28 advantage, she played 27.Qd3 with 4 minutes 35 seconds on the clock, when 27.Bf3 retained command, causing the evaluation to plunge to −6.77 and sealing defeat. Her heaviest endgame losses, which pull her average to 85 centipawns, occurred in positions that were already hopelessly lost.

Finally, Maili-Jade Ouellet's 65-centipawn endgame average warrants proper technical understanding. In round 2 against Olivia Smith of Wales, she captured the final enemy pawn on move 78, entering the classical theoretical endgame of king, bishop, and knight against a lone king, verified as won by tablebases. The Canadian master delivered checkmate on move 109 via 109.Bc6#, well within the statutory 50-move threshold. A standard depth engine search cannot calculate such an extensive forced checkmate and penalizes every move that does not truncate the line, artificially inflating the statistical average of a single game. Executing a bishop and knight checkmate under Olympiad clock conditions represents no technical shortcoming; on the contrary, it confirms thorough mastery of fundamental endgame technique.

What the online accounts show, and what they do not

This section is deliberately segregated due to distinct analytical considerations. Rapid and blitz games reflect different tactical environments: chess opening repertoires become noticeably looser and more experimental, and decisions made under acute time limits rarely correspond to deep classical preparation. Online data are valuable for assessing instinctive familiarity with specific structures and uncovering positional discomfort, rather than establishing rigid forecasts for classical over-the-board play.

Nodirbek Abdusattorov contested 163 games on the chesswarrior7197 account, posting 60% with White and 53% with Black, while opening 1.e4 in 40 of his 83 White games. His most vulnerable online segment with Black occurs against the Italian Game (1.e4 e5 2.Nf3 Nc6 3.Bc4), where he scored 28.6% across 7 encounters under medium confidence. Shamsiddin Vokhidov (shield12) played 158 games, scoring 71% with White and 63% with Black, displaying a striking reversal: with Black in the Sicilian with 2.Nf3 d6, he scored only 14.3% in 7 online games, whereas in classical tournament play the identical line yielded 3 wins and 1 draw in 4 games.

Nodirbek Yakubboev (aquarium76) recorded 104 games, achieving 69% with White and 71% with Black, with his lowest scores confined to 1.Nf3 setups that rarely feature in his classical tournament repertoire. Javokhir Sindarov (javokhir_sindarov05) contested 41 games and scored an exceptional 84% with both colours, employing 1.d4 in 11 of 19 White games in harmony with his classical practice. Mukhiddin Madaminov (macho_2006) played 28 games, highlighted by a notable shift in his opening move: he chose 1.d4 in 7 of 14 White games, in marked contrast to his exclusive use of 1.e4 across all 27 classical games in the database.

For Canada, Svitlana Demchenko (sveta10) is the sole competitor with significant volume: 300 games, posting 58% with both colours. Online, she chooses 1.e4 in 84 of 149 White games, with her lowest return appearing in 1.Nf3 fianchetto setups at 37.5% across 24 games under high statistical confidence. The accounts of Maili-Jade Ouellet (maili15) and Oksana Golubeva (madre_jedi) are verified but saw no action in the 90-day window. Yunshan Li and Hanxi Jiang lack confirmed profiles, and editorial policy strictly excludes accounts whose ownership is not certified by official FIDE registration.

What to watch in round 9

In the open tournament, the USA hold a 33-point advantage in average team rating, but Uzbekistan counter with passionate home support, the tournament lead, and two players performing above a 2830 level. The dossier's objective is not to declare a favourite, but to identify the specific lines where Uzbek scoring declines. With White, the most statistically validated opportunity targets Madaminov against 1.e4 (38.2% in 17 games) and against the Italian Game (28.6% in 7). Against Abdusattorov, challenging him with 1.d4 restricted him to 44.4% in 9 games, compared to his unbeaten 64.3% in 14 games against 1.e4. Against Vokhidov, steering into 1.d4 Nf6 2.c4 e6 3.Nf3 yielded 40.0% in 10 games. Facing Sindarov, the setup 1.e4 e5 2.Nf3 Nc6 produced 5 draws in 5 games, serving well to neutralize the position with White, but proving insufficient for anyone seeking to force decisive winning chances.

With Black, the tactical margins are tighter. Shamsiddin Vokhidov and Mukhiddin Madaminov open invariably with 1.e4; against both, the Sicilian Defence serves as the most effective setup to contain their scoring (54.5% in 11 and 54.2% in 12 games), well below their returns against 1...e5 (61.4% and 68.2%). Against Yakubboev, the Sicilian held firm with 5 draws in 5 games. Crucially, time management remains paramount: Yakubboev was in acute time trouble by move 23 in round 8, while Madaminov let a winning position slip against Niemann with only two minutes remaining. Against both competitors, maintaining complex positions on the board through the move-40 time control may prove more decisive than any specific choice of chess opening.

In the women's event, the USA enjoy theoretical favouritism anchored by a 230-point edge in average rating, but Canada arrive ahead in the standings and with Maili-Jade Ouellet in peak form. With Black, the Americans can anticipate 1.d4 from Ouellet, Li, and Golubeva; against Ouellet, the reply 1...Nf6 2.c4 e6 represents a high-confidence line where her score falls to 40.6%. With White, the strategy against Ouellet is categorical: play 1.d4 (30.0% in 10 games) rather than 1.e4 (where she scores an overwhelming 73.8% in 21 games, winning all 7 Sicilian Defence games). Against Li, the Sicilian with 2.Nf3 e6 restricted her to 20.0% in 5 games, while against Demchenko with Black, 1.d4 delivered 4 wins in 4 games. As soon as the round commences and the official PGN confirms the starting line-ups, this article's dossier files will transition to displaying the four active boards and live games.

Frequently asked questions

Update log

• 2026-09-24 — First published, with the round 9 pairings checked on chess-results and the round still to be played: repertoire from 465 classical games broadcast on Lichess, error profile with Stockfish 19 at depth 16 and blitz and rapid repertoire from verified accounts. The dossiers cover both opponents' full squads; once the line-ups are out, the same file shows the four boards and the round's game.
• 2026-09-29 — The Olympiad ended on 27 September: Uzbekistan won the open and China the women's event. This coverage is no longer updated; the final result is in the standings story.

Sources

• 46th Chess Olympiad Samarkand 2026, Open: round 9 pairings — Chess-Results
• 46th Chess Olympiad Samarkand 2026, Women: round 9 pairings — Chess-Results
• Frederik Svane v Nodirbek Yakubboev, round 8: broadcast game — Lichess
• Hans Niemann v Mukhiddin Madaminov, UzChess Cup 2026, round 9: broadcast game — Lichess
• Davaademberel Nomin-Erdene v Svitlana Demchenko, round 7: broadcast game — Lichess
• Maili-Jade Ouellet v Olivia Smith, round 2: broadcast game — Lichess
• Nodirbek Abdusattorov (chesswarrior7197): titled profile confirming the account used in the online repertoire — Chess.com

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