r1b1k3/3n2pr/1p2pp2/p5pP/2p2n2/b1PPP3/1P3PP1/R2K1B1R w q - 0 20
FEN state: r1b1k3/3n2pr/1p2pp2/p5pP/2p2n2/b1PPP3/1P3PP1/R2K1B1R w q - 0 20 ; Best move: e3f4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black king at e8. Black knight at d7, black pawn at g7 and black rook at h7. Black pawn at b6, black pawn at e6 and black pawn at f6. Black pawn at a5, black pawn at g5 and white pawn at h5. Black pawn at c4 and black knight at f4. Black bishop at a3, white pawn at c3, white pawn at d3 and white pawn at e3. White pawn at b2, white pawn at f2 and white pawn at g2. White rook at a1, white king at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. White to move.