Ice4 - UCI chess engine
by Minus Kelvin (Germany) Rating Chess Engines Diary CEDR=3054
Ice4 6.1 what's new?
This is the version of ice4 that will play in the TCEC Season 29 4k V event in November 2026, and is approximately 30 elo stronger than v6.
ice4-ob (x86-64 only) supports FEN positions and configuring hash size and thread count.
ice4.exe is a Windows build identical to ice4-ob.
ice4-tcec is configured with 256 threads and 256 GiB hash.
Ice4 6 JA vs other engines:
| Euwe 2.1.0 JA | 8.5/12 | +5 | 12 Games |
| Critter 1.6a | 4/12 | -4 | 12 Games |
| Fridolin 4.00 JA | 7.5/8 | +7 | 8 Games |
| Rhetoric 1.4.3 | 6.5/8 | +5 | 8 Games |
| Colossus 2025b | 6.5/8 | +5 | 8 Games |
| Inanis 1.6.0 | 6/8 | +4 | 8 Games |
| Cadie 2.1 | 3/8 | -2 | 8 Games |
| Gargantua 1.0 | 2.5/8 | -3 | 8 Games |
| MrBob 1.3.0 | 2/8 | -4 | 8 Games |
| Viridithas 18.0.0 dev.2113 JA | 2/8 | -4 | 8 Games |
| Princhess 0.20 JA | 0.5/8 | -7 | 8 Games |
| Cdrill 2000 | 7/7 | +7 | 7 Games |
| Byte Knight 2.0.0 JA | 6/6 | +6 | 6 Games |
| Pawnocchio 1.4 | 3.5/6 | +1 | 6 Games |
| Prelude Fusion 2.0 | 3/6 | +0 | 6 Games |
| Hardfiskur rev 98eab6f JA | 3/6 | +0 | 6 Games |
| Expositor 5 JA | 0.5/6 | -5 | 6 Games |
| MadChess 3.3 | 4/5 | +3 | 5 Games |
| Cadabra 2.1.0 JA | 3/4 | +2 | 4 Games |
| Napoleon dev-f9c69de JA | 3/4 | +2 | 4 Games |
| Ice4 v6 | 2/4 | +0 | 4 Games |

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