r2k3r/p2p1n1p/n1b1p3/1Pp3p1/P3P3/NQ1P1p1P/1b1BNPPR/RB2K3 b Q - 0 19
FEN state: r2k3r/p2p1n1p/n1b1p3/1Pp3p1/P3P3/NQ1P1p1P/1b1BNPPR/RB2K3 b Q - 0 19 ; Best move: b2a1
The current state of the chess board is: Black rook at a8, black king at d8 and black rook at h8. Black pawn at a7, black pawn at d7, black knight at f7 and black pawn at h7. Black knight at a6, black bishop at c6 and black pawn at e6. White pawn at b5, black pawn at c5 and black pawn at g5. White pawn at a4 and white pawn at e4. White knight at a3, white queen at b3, white pawn at d3, black pawn at f3 and white pawn at h3. Black bishop at b2, white bishop at d2, white knight at e2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at a1, white bishop at b1 and white king at e1. White queenside is the only castle move available. Half move number is 0. Full move number is 19. Black to move.