r1bq3r/2nn1p2/1pk1pbpP/p2p4/PPP1PP1P/3p4/3QNNB1/1RB1K2R w K - 0 21
FEN state: r1bq3r/2nn1p2/1pk1pbpP/p2p4/PPP1PP1P/3p4/3QNNB1/1RB1K2R w K - 0 21 ; Best move: e4d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black rook at h8. Black knight at c7, black knight at d7 and black pawn at f7. Black pawn at b6, black king at c6, black pawn at e6, black bishop at f6, black pawn at g6 and white pawn at h6. Black pawn at a5 and black pawn at d5. White pawn at a4, white pawn at b4, white pawn at c4, white pawn at e4, white pawn at f4 and white pawn at h4. Black pawn at d3. White queen at d2, white knight at e2, white knight at f2 and white bishop at g2. White rook at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 21. White to move.