rnb1k3/1pq1b3/2pppprp/pBP1P1pP/1Q3PP1/1P1P4/P2B4/RN1K2NR b - - 0 25
FEN state: rnb1k3/1pq1b3/2pppprp/pBP1P1pP/1Q3PP1/1P1P4/P2B4/RN1K2NR b - - 0 25 ; Best move: a5b4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black king at e8. Black pawn at b7, black queen at c7 and black bishop at e7. Black pawn at c6, black pawn at d6, black pawn at e6, black pawn at f6, black rook at g6 and black pawn at h6. Black pawn at a5, white bishop at b5, white pawn at c5, white pawn at e5, black pawn at g5 and white pawn at h5. White queen at b4, white pawn at f4 and white pawn at g4. White pawn at b3 and white pawn at d3. White pawn at a2 and white bishop at d2. White rook at a1, white knight at b1, white king at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 25. Black to move.