Nimzo-Indian Defense: St. Petersburg Variation · 64 half-moves · 4/19/2026
| # | Phase | White | Time | Black | Time |
|---|---|---|---|---|---|
| 1 | Open. | — | — | ||
| 2 | Open. | 13s | 5s | ||
| 3 | Open. | 54s | 9s | ||
| 4 | Open. | 33s | 33s | ||
| 5 | Open. | 7s | 1s | ||
| 6 | Open. | 4m 36s | 52s | ||
| 7 | Open. | 29s | 26s | ||
| 8 | Open. | 12s | 15s | ||
| 9 | Open. | 6m 16s | 31s | ||
| 10 | Open. | 1m 2s | 5m 16s | ||
| 11 | Open. | 2m 56s | 1m 21s | ||
| 12 | Open. | 6m 7s | 23 min | ||
| 13 | Open. | 10 min | 13 min | ||
| 14 | Open. | 3m 11s | 12 min | ||
| 15 | Open. | 6m 1s | 4m 28s | ||
| 16 | MG | 12 min | 3m 17s | ||
| 17 | MG | 6m 1s | 5s | ||
| 18 | MG | 5m 20s | 58s | ||
| 19 | MG | 2m 52s | 11s | ||
| 20 | MG | 5m 55s | 2m 11s | ||
| 21 | MG | 1m 36s | 4m 29s | ||
| 22 | MG | 4s | 3s | ||
| 23 | MG | 5s | 9s | ||
| 24 | MG | 3m 44s | 3m 8s | ||
| 25 | MG | 4s | 44s | ||
| 26 | MG | 5m 56s | 2m 12s | ||
| 27 | MG | 2m 21s | 8m 23s | ||
| 28 | MG | 1m 34s | 1s | ||
| 29 | MG | Mistake-128 cp-1.6 → -2.9 | 9s | 16s | |
| 30 | MG | Mistake-129 cp-2.7 → -4.0 | 6m 2s | 36s | |
| 31 | MG | 7s | 23s | ||
| 32 | MG | Blunder-353 cp-3.9 → -7.4 | 16s | 51s |
Positions where players took the most time — the arrow shows the move actually played.
Total time White
1h 37 min
Zhang, Ziji
Total time Black
1h 30 min
Kong, Xiangrui
Gap
6m 45s
Zhang, Ziji used more clock
| Phase | ♔ Zhang, Ziji | ♚ Kong, Xiangrui |
|---|---|---|
Opening 15 moves | 42 min ≈ 3m 3s / move | 1h 3 min ≈ 4m 30s / move |
Middlegame 17 moves | 55 min ≈ 3m 14s / move | 27 min ≈ 1m 39s / move |
Endgame 0 move | Not played in this phase | Not played in this phase |
Heat strip
Each cell = one move · green < 30s · yellow < 2min · amber < 8min · red ≥ 8min
Zhang, Ziji
White · Middlegame