r1b1k2r/p1qp1pb1/1pnP4/1PpQp1p1/5P1p/P1K1P1PP/2P2n2/RNB2BN1 b q - 2 19
FEN state: r1b1k2r/p1qp1pb1/1pnP4/1PpQp1p1/5P1p/P1K1P1PP/2P2n2/RNB2BN1 b q - 2 19 ; Best move: e5f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black queen at c7, black pawn at d7, black pawn at f7 and black bishop at g7. Black pawn at b6, black knight at c6 and white pawn at d6. White pawn at b5, black pawn at c5, white queen at d5, black pawn at e5 and black pawn at g5. White pawn at f4 and black pawn at h4. White pawn at a3, white king at c3, white pawn at e3, white pawn at g3 and white pawn at h3. White pawn at c2 and black knight at f2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 2. Full move number is 19. Black to move.