r1b1kbr1/pp4pp/2p2n2/1q1ppp2/1n1PPPP1/P1B5/2P2KBP/R1Q2NNR w q - 0 19
FEN state: r1b1kbr1/pp4pp/2p2n2/1q1ppp2/1n1PPPP1/P1B5/2P2KBP/R1Q2NNR w q - 0 19 ; Best move: a3b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at g7 and black pawn at h7. Black pawn at c6 and black knight at f6. Black queen at b5, black pawn at d5, black pawn at e5 and black pawn at f5. Black knight at b4, white pawn at d4, white pawn at e4, white pawn at f4 and white pawn at g4. White pawn at a3 and white bishop at c3. White pawn at c2, white king at f2, white bishop at g2 and white pawn at h2. White rook at a1, white queen at c1, white knight at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 19. White to move.