Qiu Jun (6p) vs Cho Han-seung (5p) — Samsung Cup World Open, 2001

Reading the board

What every overlay on the board means

AI suggestions

Blue dot — best move KataGo's top pick. No number on it. Toggle: AI button (A)

Other candidates Blue is the best move in this position. Green is good, gold is OK. Numbers inside show points difference compared to the blue (best) move. Toggle: AI button (A)

Cyan halo A standout move — the engine's top choice in a spot where it wasn't obvious. Most precise on Study and Deep analysis; on a quick (free) analysis it's a lighter estimate. Toggle: Move animations (in view settings)

Territory & dead groups

Territory tint Faint black or white wash over intersections the engine expects that color to own. Toggle: Territory button under the board Toggle: Territory (in view settings)

Red overlay — groups in danger Stones the engine thinks are at risk of being captured. Toggle: Groups button under the board Toggle: Groups (in view settings)

Dead stones (×) Stones the engine considers dead. Toggle: Groups button under the board Toggle: Groups (in view settings)

Move animations

−7 pts

Score-loss pill Drops in next to a move that lost 5+ points. Orange for mistake, red for blunder. Toggle: Move animations (in view settings)

✦ ✦ ✦ ✦ ✦

Sparkles — set-up move The opponent's next move was a 5+ point mistake. This move probably set it up. Toggle: Move animations (in view settings)

Continuations

Try a line out, move by move

Each tile is a move you could play next. Tap one to play it: it lands on the board as a numbered stone, and this panel refills with the options that follow. Keep tapping to build a line.

The Variation panel above lists the moves you've played. Tap any of them to rewind there; tap ← Main line to return to the game.
Tap Preview on the current move to lay the whole continuation on the board at once — the AI's best line, or the recorded one if the game has it. Tap again to clear.
Tiles tagged sgf are variations saved in the game record.
Each tile's corner shows how good the move is — from blue (best) through green and yellow to red — the same color it has on the board. The blue-highlighted tile is the AI's top choice.
The move actually played in the game isn't shown here — only the alternatives.

New lines you play here are read to 100 visits — quick, but shallow. A deeper read finds longer, stronger continuations.

See deeper analysis plans →

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Qiu Jun vs Cho Han-seung

6th Samsung Cup · Qualification tournament, final round · 2001-07-30

About this tournament

Launched in 1996 and sponsored by Samsung Fire & Marine Insurance, the Samsung Cup is one of the most prestigious annual international Go championships. The format begins with a preliminary stage of group play, with group winners joining seeded players in a main knockout bracket; semifinals and the final are best-of-three. The champion takes home 300 million Korean won (roughly US$230,000), making it one of the richest prizes in professional Go. The tournament has been a proving ground for legends -- Lee Changho, Lee Sedol (who won it three times), and in recent years Chinese players like Ke Jie have dominated. It remains a centerpiece of the Korean Go calendar and a barometer of which nation currently leads the Go world.

Game details

Date: 2001-07-30
Moves: 268
Komi: 6.5
Rules: Japanese (assumed)
Result: W+2.5
Game record: GoGoD

Ranks at the time of the game

Qiu Jun Black · 6p

Cho Han-seung White · 5p

6th Samsung Cup · Qualification tournament, final round

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