r1bqk3/ppp2p2/n2pp3/1P1P1rpp/4P1P1/3P4/P5BP/RNBQK1bR w q - 2 21
FEN state: r1bqk3/ppp2p2/n2pp3/1P1P1rpp/4P1P1/3P4/P5BP/RNBQK1bR w q - 2 21 ; Best move: h1g1
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black king at e8. Black pawn at a7, black pawn at b7, black pawn at c7 and black pawn at f7. Black knight at a6, black pawn at d6 and black pawn at e6. White pawn at b5, white pawn at d5, black rook at f5, black pawn at g5 and black pawn at h5. White pawn at e4 and white pawn at g4. White pawn at d3. White pawn at a2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1, black bishop at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 21. White to move.