♟ ChessInsights
French Youth Chess Championships 2026 | O18

Analyses

5 automatic angles of analysis across the entire tournament.

Approaching move 40

Time left on the clock just before playing the 40th move. Less time = more pressure at the time control.

Preparation depth (out of book)

First move where the player thought > 30s. The higher, the more moves their preparation covers.

PlayerAverage depthRange (min / max)Games
Desmet, Cyprien
move 7.0
771
Rigat, Severin
move 7.0
771
Folio, Pierre
move 6.0
661
Boisson-Chaigneau, Arthur
move 6.0
661
Llari, Marc
move 5.0
551
Poghosyan, Alen
move 5.0
282
Greissler, Raphael
move 5.0
551
Carissan, Matteo
move 4.0
441
Garrigue, Julian
move 4.0
172
Pierrot, Yohann
move 4.0
441
Deladerriere, Apollo
move 4.0
441
El Moussaoui, Sidali
move 4.0
441
Vallee, Louis
move 3.7
273
Breuil, Tristan
move 3.0
253
Soyeux, Gabriel
move 3.0
331
Rannou, Arthur
move 3.0
331
Krajewski, Thomas
move 2.0
221
Tudoux Guerber, Arthur
move 2.0
221
Eugene, Nathael
move 1.0
112
Dessyn, Timothee
move 1.0
111
Stoll, Lucia
move 1.0
111
Trevisiol, Antoine
move 1.0
111
El Idrissi, Ismael
move 1.0
111

Evolution across the 14 rounds

Average time per move at each round. Shows fatigue / confidence settling in.

Opening time by ECO family

Which opening families make each player think earliest in the game.

Player
A
Flank
B
Semi-open
C
Open
D
Closed
E
Indian
Boisson-Chaigneau, Arthur
56s
1 game
Breuil, Tristan
3m 43s
1 game
3m 28s
1 game
3m 9s
1 game
Carissan, Matteo
4m 25s
1 game
Deladerriere, Apollo
2m 46s
1 game
Desmet, Cyprien
2m 22s
1 game
Dessyn, Timothee
2m 49s
1 game
El Idrissi, Ismael
2m 28s
1 game
El Moussaoui, Sidali
1m 54s
1 game
Eugene, Nathael
1m 52s
2 games
Folio, Pierre
52s
1 game
Garrigue, Julian
1m 16s
1 game
2m 43s
1 game
Greissler, Raphael
2m 16s
1 game
Krajewski, Thomas
2m 15s
1 game
Llari, Marc
3m 12s
1 game
Pierrot, Yohann
5m 11s
1 game
Poghosyan, Alen
3m 53s
1 game
4m 46s
1 game
Rannou, Arthur
2m 48s
1 game
Rigat, Severin
2m 12s
1 game
Soyeux, Gabriel
1m 46s
1 game
Stoll, Lucia
2m 59s
1 game
Trevisiol, Antoine
2m 53s
1 game
Tudoux Guerber, Arthur
2m 54s
1 game
Vallee, Louis
1m 58s
1 game
3m 44s
1 game
3m 12s
1 game
Average time per move (moves 1-15) by ECO family of the game opening. Intensity = proportional to time. Hover a cell to see the number of games.

Does thinking longer help?

The cost of a move is the eval lost by the player (positive = bad move). We aggregate by think duration to see if thinking more produces cleaner moves — and who benefits most.

1054 moves analyzed

Median cost by think duration

Positive = the move dropped the eval (bad move). Close to 0 = neutral move. The blunder rate is the % of moves in the bucket with a cost > 150 cp.

Who does time help? (median < 1min vs > 5min)

Difference between median quality when the player thinks fast (≤ 60s) and when they think long (> 5min). Negative = their long thinks pay off. Positive = they would have done better to move faster.

PlayerFast moves (≤ 60s)Long moves (> 5min)Δ
Carissan, Matteo+11 cp(9)-4 cp(3)-15 cp
Desmet, Cyprien+9 cp(10)0 cp(6)-9 cp
El Moussaoui, Sidali+6 cp(12)0 cp(4)-6 cp
Trevisiol, Antoine+4 cp(9)-2 cp(4)-6 cp
Llari, Marc+5 cp(12)+2 cp(6)-3 cp
Vallee, Louis+6 cp(43)+8 cp(12)+2 cp
Breuil, Tristan+2 cp(95)+6 cp(20)+4 cp
Folio, Pierre0 cp(15)+4 cp(7)+4 cp
El Idrissi, Ismael+4 cp(19)+8 cp(8)+4 cp
Tudoux Guerber, Arthur0 cp(31)+6 cp(7)+6 cp
Eugene, Nathael+3 cp(25)+9 cp(11)+6 cp
Poghosyan, Alen+7 cp(48)+12 cp(12)+6 cp
Krajewski, Thomas+9 cp(30)+16 cp(5)+8 cp
Deladerriere, Apollo+4 cp(9)+12 cp(6)+8 cp
Pierrot, Yohann+7 cp(6)+17 cp(5)+10 cp
Dessyn, Timothee+5 cp(19)+16 cp(5)+11 cp
Soyeux, Gabriel0 cp(46)+13 cp(8)+13 cp
Boisson-Chaigneau, Arthur+3 cp(28)+17 cp(5)+15 cp
Stoll, Lucia+4 cp(19)+35 cp(7)+31 cp
Greissler, Raphael+4 cp(17)+45 cp(5)+41 cp
Garrigue, Julian+2 cp(32)+66 cp(8)+64 cp

Worst blunders after a long think (> 5min)

The moves where the player thought the most AND lost the most eval.

  • #1
    Garrigue, Julian
    Move 40 · Ne7
    30 min+500 cp
  • #2
    Greissler, Raphael
    Move 17 · Bh3
    11 min+306 cp
  • #3
    Stoll, Lucia
    Move 14 · O-O
    6m 37s+225 cp
  • #4
    Krajewski, Thomas
    Move 22 · Rce8
    8m 18s+203 cp
  • #5
    Garrigue, Julian
    Move 13 · c3
    14 min+192 cp
  • #6
    Pierrot, Yohann
    Move 10 · Be6
    28 min+156 cp
  • #7
    Stoll, Lucia
    Move 20 · Nxe7+
    21 min+148 cp
  • #8
    Eugene, Nathael
    Move 20 · f5
    19 min+133 cp
  • #9
    Stoll, Lucia
    Move 15 · b3
    17 min+128 cp
  • #10
    Garrigue, Julian
    Move 17 · Qa5
    5m 37s+122 cp