r2qk3/2p1p1br/3pn3/p2n1p1p/P2P1P2/N1Q2NpR/PB2P3/2R1KB2 w q - 0 21
FEN state: r2qk3/2p1p1br/3pn3/p2n1p1p/P2P1P2/N1Q2NpR/PB2P3/2R1KB2 w q - 0 21 ; Best move: c3c6
The current state of the chess board is: Black rook at a8, black queen at d8 and black king at e8. Black pawn at c7, black pawn at e7, black bishop at g7 and black rook at h7. Black pawn at d6 and black knight at e6. Black pawn at a5, black knight at d5, black pawn at f5 and black pawn at h5. White pawn at a4, white pawn at d4 and white pawn at f4. White knight at a3, white queen at c3, white knight at f3, black pawn at g3 and white rook at h3. White pawn at a2, white bishop at b2 and white pawn at e2. White rook at c1, white king at e1 and white bishop at f1. Black queenside is the only castle move available. Half move number is 0. Full move number is 21. White to move.