Round 11 in numbers

Uzbekistan came in first and Ukraine two points behind them, and three boards were drawn. The point came on board 4, where Mukhiddin Madaminov beat Roman Dehtiarov with Black in 55 moves. Replay Nodirbek Abdusattorov drew with Igor Kovalenko in 73 on board 1 and finishes on 8½ from 11, unbeaten. Replay Uzbekistan won ten of their eleven matches. The only team to beat them was Germany, in round 8.

On board 3 Nodirbek Yakubboev promoted to a knight with check, 43.d8=N+, the only underpromotion in the Open today. Ihor Samunenkov took it straight away, 43...Rxd8, and the game was drawn in 52, with 30 captures, level for the most of the round. Replay

India and Hungary drew 2–2. Arjun Erigaisi beat Peter Leko with Black in 64 Replay, and Gleb Dudin, 2560, beat Gukesh with White on board 4 in 59. Replay It was Gukesh's first loss of the event, and he finishes on 8½ from 11.

Germany beat the Netherlands 2½–1½ on Matthias Bluebaum's win with White against Jorden Van Foreest in 64. Replay Anish Giri and Vincent Keymer drew board 1 in 46, the highest-rated game of the round. Replay On board 4 Rasmus Svane spent 54 minutes and 15 seconds on 10.Bxd4, the longest think of the Open today, and drew with Casper Schoppen in 39. Replay

So India and Germany both finish on 18. India are second on the first tie-break, and they also won the match between the two, 2½–1½ in round 9. Behind them the USA beat Turkiye 3–1, with wins for Hans Moke Niemann with White Replay and Levon Aronian with Black Replay, and are first of the four teams on 17. France were the team of the round, 3½–½ against Denmark and a performance of 2855 against opposition averaging 2555.

China beat Vietnam 3–1 with two wins for White. Zhu Jiner beat Pham Le Thao Nguyen on board 1 in 55 Replay, and Lu Miaoyi beat Luong Phuong Hanh on board 3 in 52. Replay China finish unbeaten, nine wins and two draws, the draws against Kazakhstan and India.

Kazakhstan and Poland drew 2–2. Aleksandra Maltsevskaya beat Alua Nurman with Black in 42 Replay, and Elnaz Kaliakhmet levelled it with White against Alicja Sliwicka in 45. Replay Kazakhstan are second on 18 and unbeaten too: seven wins and four draws, all four in the last five rounds.

India and Georgia drew 2–2 as well. Humpy Koneru beat Nana Dzagnidze with White in 24 moves, the highest-rated game of the section Replay, and Bella Khotenashvili beat Divya Deshmukh with White in 47. Replay Savitha Shri drew with Meri Arabidze in 83 moves and finishes on 9 from 10, unbeaten. Replay Five teams end on 17: India, the USA, Poland, Armenia and Mongolia, in that order on tie-break.

Armenia beat Uzbekistan 3–1 and were the team of the round, a performance of 2535 against opposition averaging 2335. Lilit Mkrtchian beat Afruza Khamdamova with White in 41 Replay, and Mariam Mkrtchyan beat Gulrukhbegim Tokhirjonova with Black, also in 41. Replay

The best game of the match was a draw. On board 3 Elina Danielian was winning against Umida Omonova, by six to ten points on Lichess's evaluation from move 65 to move 82, with under four minutes on her clock. Omonova, with about 20 minutes on hers, gave 28 checks in a row with her queen, from 61...Qf1+ to 88...Qf2+. The white king went round in circles: after 87...Qa2+ the same position stood on the board for the fifth time, and five times is a draw by the rules. The relay runs on to move 89. That's the Longest King Hunt of the Women's section at this Olympiad, and it equals the Open's record, Rafail Antoniou's 28 in round 9. Replay

The Women's section set more records on the last day. Ahmed Wadifa of Bangladesh and Clara Dias of Brazil drew in 127 moves, the longest game of the section at this Olympiad, and Dias played 98 of those moves with under five minutes on her clock. Replay Shemilah James of Trinidad and Tobago moved her queen 166 squares in 55 queen moves, about 200 metres at human scale. The site calls the longest queen trip the Sporty Queen, and nobody's queen has gone further at this Olympiad. James lost to Sina Tadesse Negi of Ethiopia in 98. Replay

Magne Kouokam Sylviane of Cameroon had an Il Vaticano against Hannah Wilson of Barbados: after 10...Bxe4 her two bishops stood on b4 and e4, on one rank with two white pawns between them. It's named after a joke on r/AnarchyChess, and it was the only one of the round. It lasted one move, 11.Qxe4. Wilson won in 54, and Barbados beat Cameroon 4–0. Replay

Miora Andriamasoandro of Madagascar built a Pawn Diamond against Joseph Xavier Nyambalo of Malawi. After 16.f4 there were white pawns on e3, d4, f4 and e5, around an empty e4, and that too was the only one of the round. Replay The f-pawn kept going, 17.f5 and 22.fxg6, and the game ended after 23...Nb8 with mate in one on the board for White.

The Comoros Islands beat Greenland 4–0. Alfene Ambdullah won in 18 moves with White against Egon Mattaaq, the quickest win in the Open today. Replay On board 4 Carl Fleischer of Greenland had mate in nine against Mchangama Omar after 33...Kg7 and played 34.Rd1, and after it White was 19 points down. That was the biggest blunder of the Open today, measured by the win chance it cost. Omar won in 40. Replay

The wildest game of the round, by the evaluation lost on both sides, was Kaellaa Fyfield-Jones of Saint Kitts and Nevis against Kristyna Elisee Ndam Ziza of Gabon. The lead changed hands 17 times. After 40...Kh6 White had mate in one, played 41.g4, and Black mated on move 43, 43...Qg2#. Replay

The biggest upsets were 354 points in the Open and 346 in the Women's section. Aashish Phunyal of Nepal, 2008, beat Kirill Chukavin of Estonia, 2362, with Black in 44 Replay, and Naira Sinoia of Mozambique, 1559, beat Patricia Evarista Castillo Pena of the Dominican Republic, 1905, with Black in 71. Replay

Age, in a line. Zakaa Ahmed Mohamed of Egypt, born in 2013, beat Syringa Lyn Camp of Wales, born in 1965, in 38 moves. Replay

Lichess analyses every finished broadcast game on its own servers, and by the evening 100% of Open moves and 99.9% of Women's moves had an evaluation, so the accuracy and blunder numbers are Lichess's, not mine. Relay clocks are chaos, so the script looks for the jump where the 30-minute bonus actually lands instead of trusting move 40. Forfeits never count for move stats, results are checked against chess-results every evening, ties are shown instead of broken, and every award links to the exact move.

Tonight's note is about the final table. The site works out the standings itself from the match results, with the tie-breaks from the Olympiad regulations: match points, then a Sonneborn-Berger score over the opponents, then game points. That's how India come out ahead of Germany, and how the five teams on 17 in the Women's section are put in order. The official table is the one on chess-results, and the medals are FIDE's to announce. If the two ever disagree, chess-results is right.

That was the last round. The site stays up with all eleven rounds, each with its own page, the team standings and an overview of the whole event with its record book. It is unofficial and not affiliated with FIDE, the organisers or Lichess.

Got an idea for an award? Lichess comments and the r/chess round thread both reach me.

And thanks again to the Lichess broadcast team. Eleven rounds and more than 8,000 games came through the relay. Without it, none of this exists.