rnb3nr/3kp3/pppp1b2/4RpPp/5P2/N1P5/1P1PP1P1/2BQKB1R b K - 0 18
FEN state: rnb3nr/3kp3/pppp1b2/4RpPp/5P2/N1P5/1P1PP1P1/2BQKB1R b K - 0 18 ; Best move: d6e5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black king at d7 and black pawn at e7. Black pawn at a6, black pawn at b6, black pawn at c6, black pawn at d6 and black bishop at f6. White rook at e5, black pawn at f5, white pawn at g5 and black pawn at h5. White pawn at f4. White knight at a3 and white pawn at c3. White pawn at b2, white pawn at d2, white pawn at e2 and white pawn at g2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.