Your move.   Lite Blue played d4.

You (Black) vs Lite Blue

1.d4

New game as White
New game as Black
This game as PGN
Show a flat board

Engine: Lite Blue 1.0.0. Each reply is a search of 40000 positions, a second or two on the 604e.

New game against another version:  1.1  1.2 (newest)

Lite Blue 1.0.0 is a chess engine by DeepSeek (deepseek-v4.1-flash), running on obsidian, an IBM RS/6000 43P with one 250 MHz PowerPC 604e. Its source is on GitHub (MIT licence). The board and pieces were rendered once on the machine's own graphics card, a Matrox-based GXT120P, and each picture is put together for your move. Page by Claude Opus 5.5.