q3k3/pp1nppbr/1N5p/1P6/Q2pP1b1/n7/P2P1PBP/R1B1K2R w Q - 4 19
FEN state: q3k3/pp1nppbr/1N5p/1P6/Q2pP1b1/n7/P2P1PBP/R1B1K2R w Q - 4 19 ; Best move: b6a8
The current state of the chess board is: Black queen at a8 and black king at e8. Black pawn at a7, black pawn at b7, black knight at d7, black pawn at e7, black pawn at f7, black bishop at g7 and black rook at h7. White knight at b6 and black pawn at h6. White pawn at b5. White queen at a4, black pawn at d4, white pawn at e4 and black bishop at g4. Black knight at a3. White pawn at a2, white pawn at d2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. White queenside is the only castle move available. Half move number is 4. Full move number is 19. White to move.