2r1kb1r/p1q2p2/n2pp2n/1PpP2p1/7p/4PK2/PP3PBP/RNB3NR b k - 0 19
FEN state: 2r1kb1r/p1q2p2/n2pp2n/1PpP2p1/7p/4PK2/PP3PBP/RNB3NR b k - 0 19 ; Best move: a6b4
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black queen at c7 and black pawn at f7. Black knight at a6, black pawn at d6, black pawn at e6 and black knight at h6. White pawn at b5, black pawn at c5, white pawn at d5 and black pawn at g5. Black pawn at h4. White pawn at e3 and white king at f3. White pawn at a2, white pawn at b2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 19. Black to move.