UCI chess engine
features:
- windows
- 64 bit
- c++20
- alpha-beta
- nnue
- bitboards
- hash
- threads
| perft 7 | |
| a2a3 | 1067431060 |
| b2b3 | 1332339750 |
| c2c3 | 1440749440 |
| d2d3 | 2275986920 |
| e2e3 | 3061384100 |
| f2f3 | 1020210080 |
| g2g3 | 1359876510 |
| h2h3 | 1066784230 |
| a2a4 | 1370773370 |
| b2b4 | 1340874760 |
| c2c4 | 1577564430 |
| d2d4 | 2696055990 |
| e2e4 | 3094782630 |
| f2f4 | 1196148410 |
| g2g4 | 1302930180 |
| h2h4 | 1384952900 |
| b1a3 | 1201421440 |
| b1c3 | 1485271610 |
| g1f3 | 1476785540 |
| g1h3 | 1206695250 |
| nodes | 3195901860 |
| time | 15.1104 |
Kobra's strength & unique play results from the use of an original NNUE evaluation created & trained from millions of Kobra vs Kobra self-play games. Much of the data used is available here: https://github.com/jasper-sinclair/kobra-data
NNUE features: https://github.com/jasper-sinclair/kobra/blob/main/docs/nnue-features.md
NNUE training: https://github.com/jasper-sinclair/kobra/blob/main/docs/nnue-train.md
NNUE creation: https://github.com/jasper-sinclair/kobra/blob/main/docs/nnue-creation.md
KOBRA train: https://github.com/jasper-sinclair/kobra-train
Kobra NNUE is powered by a highly optimized custom adaptation of https://github.com/dshawul/nnue-probe